{"title":"Caleffi","description":"\u003cp\u003eShop Caleffi hydronic heating components, mixing valves, air separators, and system accessories at New England Supply House. Caleffi is a leading Italian manufacturer of precision hydronic components, widely specified by engineers and installers for high-efficiency heating systems. Their product line is the standard of quality for modern hydronic installations.\u003c\/p\u003e\u003cp\u003eOur Caleffi inventory includes primary\/secondary system components, thermostatic mixing valves, pressure reducing valves, automatic air vents, Discal air and dirt separators, and balancing valves. HVAC engineers, plumbing contractors, and hydronic system designers throughout New England choose Caleffi for their precision engineering and reliability in both residential and commercial applications.\u003c\/p\u003e","products":[{"product_id":"caleffi-502610a-air-vent","title":"Caleffi 502610A Air Vent","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the \u003cb\u003eCaleffi 502610A Air Vent\u003c\/b\u003e, an automatic, float-type air vent designed for heating systems and radiators. The brass body houses a silicon rubber mechanism seal and EPDM seal for durable, dependable deaeration of both air and water at temperatures up to 240°F and pressures up to 150 PSI (90 PSI during venting).\u003c\/p\u003e \u003cp\u003eKey specifications include a 1\/8 inch inlet with a male-threaded connection, ensuring straightforward integration into standard piping. This unit handles both air and water media, delivering reliable venting in heating applications.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAutomatic float-type operation for continuous air removal\u003c\/li\u003e \u003cli\u003eBrass body construction for rugged durability\u003c\/li\u003e \u003cli\u003eInlet: 1\/8 inch, male-threaded connection\u003c\/li\u003e \u003cli\u003eTemperature rating up to 240°F\u003c\/li\u003e \u003cli\u003ePressure rating: 150 PSI (90 PSI venting)\u003c\/li\u003e \u003cli\u003eSilicon rubber and EPDM seals for long service life\u003c\/li\u003e \u003cli\u003eSuitable for heating systems and radiators\u003c\/li\u003e \u003cli\u003eISO 9001 and ICIM compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47601994891486,"sku":"114842","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380932_629ce898-170d-4115-85e1-195a563faa33.jpg?v=1765813725"},{"product_id":"caleffi-502710a-air-vent","title":"Caleffi 502710A Air Vent","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 502710A Air Vent is an automatic float vent designed to expel trapped air from heating systems and radiators. This high-quality air vent combines reliability with ease of installation, delivering consistent performance across a range of operating conditions. Featuring a brass body, a 1\/8 inch inlet, and a male threaded connection, it is built to fit standard piping, making retrofits straightforward. The unit supports both air and water media and is rated for up to 240°F and 150 PSI (90 PSI venting), ensuring robust operation in diverse heating setups. ISO 9001 and ICIM certifications underline its quality and precision.\u003c\/p\u003e \u003cp\u003eKey features:\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eAutomatic float mechanism\u003c\/b\u003e with a silicone rubber and EPDM seal for durable, leak-free venting\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBrass body\u003c\/b\u003e for corrosion resistance and long service life in heating environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e1\/8 inch inlet size\u003c\/b\u003e with male threaded connection for flexible installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWide media compatibility\u003c\/b\u003e handling air and water without performance loss\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh temperature and pressure ratings\u003c\/b\u003e up to 240°F and 150 PSI (90 PSI venting)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47601994957022,"sku":"114844","price":16.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380935_35f89496-5e0e-4275-8b35-86374df0e5f5.jpg?v=1765813741"},{"product_id":"caleffi-508013a-air-vent","title":"Caleffi 508013A Air Vent","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the \u003cb\u003eCaleffi 508013A Air Vent\u003c\/b\u003e, an automatic float air vent engineered for efficient air removal in hydronic heating systems. The \u003cb\u003eCaleffi 508013A Air Vent\u003c\/b\u003e features a 1\/8 inch inlet with a male threaded connection, a durable chrome plated brass body, and an EPDM seal for reliable, long-lasting operation.\u003c\/p\u003e \u003cp\u003eDesigned for comfort in heating applications and radiator circuits, it handles air and water with a temperature rating up to 212°F and a pressure rating of 150 PSI (15 PSI steam). Built to ISO 9001 and ICIM standards, this vent ensures consistent performance in modern HVAC systems.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eAutomatic float operation\u003c\/b\u003e for continuous air removal\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e1\/8\" inlet\u003c\/b\u003e with male thread for easy installation\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eChrome plated brass body\u003c\/b\u003e for durability and corrosion resistance\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEPDM seal\u003c\/b\u003e ensures tight, reliable sealing\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature rating 212°F\u003c\/b\u003e and \u003cb\u003e150 PSI\u003c\/b\u003e (15 PSI steam) compatibility\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSuitable for heating systems and radiators\u003c\/b\u003e to improve efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47601994989790,"sku":"114848","price":6.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380937_914da55b-87c2-4a85-959d-41270239126d.jpg?v=1765813757"},{"product_id":"caleffi-521519a-thermostatic-and-pressure-balanced-mixing-valve","title":"Caleffi 521519A Thermostatic and Pressure Balanced Mixing Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eCaleffi 521519A Thermostatic and Pressure Balanced Mixing Valve\u003c\/b\u003e delivers precise hot-water blending for domestic hot water, radiant heating, and hydronic systems. This 3\/4 inch valve features soldered connections and a durable brass body, designed for reliable, long-term performance.\u003c\/p\u003e \u003cp\u003eSet temperature ranges from \u003cb\u003e85 to 150°F\u003c\/b\u003e, with a temperature rating up to \u003cb\u003e200°F\u003c\/b\u003e and a maximum differential pressure of \u003cb\u003e20 PSI\u003c\/b\u003e to protect fixtures. The valve is \u003cb\u003elead-free\u003c\/b\u003e and meets critical standards for safety and compatibility across plumbing and heating installations.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eConnection: \u003cb\u003e3\/4 inch\u003c\/b\u003e (Soldered x Soldered x Soldered)\u003c\/li\u003e \u003cli\u003eThermostatic control with adjustable setpoint (85–150°F)\u003c\/li\u003e \u003cli\u003eTemperature rating up to 200°F; Pressure rating up to 200 PSI\u003c\/li\u003e \u003cli\u003eFlow capacity 3 CV; Flow rate 1 GPM\u003c\/li\u003e \u003cli\u003eMax differential pressure 20 PSI; Max inlet pressure ratio 2:1\u003c\/li\u003e \u003cli\u003eCompact footprint: End-to-end 5\", Base to inlet 7-13\/16\", Inlet to outlet 7-13\/16\"\u003c\/li\u003e \u003cli\u003eMaterials and inclusions: Lead-free brass body; Stainless steel spring, EPDM seal, PPO shutter\u003c\/li\u003e \u003cli\u003eApplications: Domestic hot water, hydronic and radiant heating systems\u003c\/li\u003e \u003cli\u003eStandards: ASSE 1017, CSA B125.3, NSF\/ANSI 372, IPC, IRC, UPC, NPC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47601995022558,"sku":"114868","price":196.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380950_ae948b7c-83db-4cba-9c34-65f53581acd3.jpg?v=1765813786"},{"product_id":"caleffi-573009a-combination-fill-valve-and-backflow-preventer","title":"Caleffi 573009A Combination Fill Valve and Backflow Preventer","description":"\u003cdiv\u003e\n\u003cp\u003eThe Combination Fill Valve and Backflow Preventer is designed to protect your drinking water from backflow while maintaining proper fill for storage tanks and appliances. The Caleffi 573009A combines a dual-check backflow preventer with a dependable fill valve for a compact, reliable solution.\u003c\/p\u003e \u003cp\u003eDesigned for 1\/2 inch nominal size with soldered union x female threaded end connections, this unit fits standard plumbing configurations. The compact body is brass with an EPDM seal, rated for up to 150°F and 175 PSI, making it suitable for most residential water systems.\u003c\/p\u003e \u003cp\u003eCertified to CSA (Canada and US) and ASSE 1012 standards, it features a pressure setting range of 3 to 60 PSI with a factory setting of 15 PSI and a gauge scale from 0 to 60 PSI for easy monitoring.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1\/2 in nominal size for versatile installation\u003c\/li\u003e \u003cli\u003eEnd connections: soldered union x female thread\u003c\/li\u003e \u003cli\u003eBrass body with EPDM seals for durability\u003c\/li\u003e \u003cli\u003ePressure rating 175 PSI; temperature rating 150°F\u003c\/li\u003e \u003cli\u003eCompliance: CSA and ASSE 1012\u003c\/li\u003e \u003cli\u003eAdjustable pressure range 3–60 PSI (factory setting 15 PSI)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47601995055326,"sku":"114966","price":163.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380972_eb334b29-744b-489f-8465-01055306449f.jpg?v=1765814026"},{"product_id":"caleffi-573403a-backflow-preventer","title":"Caleffi 573403A Backflow Preventer","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 573403A Backflow Preventer delivers reliable protection for plumbing and hydronic systems. This Type Dual Check Continuous Pressure device combines backflow prevention with a built-in pressure reducing valve to guard potable water while maintaining steady downstream pressure.\u003c\/p\u003e \u003cp\u003eDesigned for easy installation, it features a nominal 1\/2 inch size with end connections of \u003cb\u003eFemale Threaded Union x Female Threaded Union\u003c\/b\u003e. The brass body houses a stainless steel disc\/poppet and spring, with an EPDM diaphragm and seal. Rated for 32 to 250°F and up to 175 PSI, it supports a flow rate up to 5.5 GPM and is suitable for plumbing and hydronic applications. It meets ASSE 1012, CSA B64.3, NSF 372, ICC-ES, IPC, IRC, UPC, ANAB, FM, ICIM, and ISO 9001 standards and is lead-free.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eLead-free brass body\u003c\/b\u003e for safe, durable use\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStainless steel disc\/poppet\u003c\/b\u003e and spring resist corrosion\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEPDM diaphragm and seal\u003c\/b\u003e for reliable sealing\u003c\/li\u003e \u003cli\u003eNominal size \u003cb\u003e1\/2 inch\u003c\/b\u003e with \u003cb\u003eFemale Threaded Union x Female Threaded Union\u003c\/b\u003e connections\u003c\/li\u003e \u003cli\u003eFlow up to \u003cb\u003e5.5 GPM\u003c\/b\u003e and pressure rating up to \u003cb\u003e175 PSI\u003c\/b\u003e\n\u003c\/li\u003e \u003cli\u003eTemperature range \u003cb\u003e32–250°F\u003c\/b\u003e\n\u003c\/li\u003e \u003cli\u003eInclusions: \u003cb\u003eStainless Steel Filter\u003c\/b\u003e, \u003cb\u003eEPDM\u003c\/b\u003e diaphragm and seal, and \u003cb\u003eBrass Check Valve\u003c\/b\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eProtect your water system with this robust, lead-free backflow preventer from Caleffi.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47601995088094,"sku":"114967","price":77.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380973_a4731430-89f4-4d04-8df2-47967d664d93.jpg?v=1765814030"},{"product_id":"caleffi-z111000-motorized-zone-valve-actuator","title":"Caleffi Z111000 Motorized Zone Valve Actuator","description":"\u003cdiv\u003e\n\u003cp\u003eThe Motorized Zone Valve Actuator is the Caleffi Z111000 model, delivering precise control for hydronic systems. This Type 2-Position actuator uses a spring-return mechanism and operates on 24 Volt AC, ensuring reliable open\/close action for motorized zone valves in open or closed systems.\u003c\/p\u003e\n\u003cp\u003eBuilt for durability, it features a polycarbonate base and cover with an aluminum plate, a 1\/2 inch supply connection, and an 18 inch wire harness. Designed to withstand typical HVAC environments, it operates from 32 to 104 F and is UL 873, CE and CUL listed.\u003c\/p\u003e\n\u003cp\u003eThis actuator includes an auxiliary microswitch; the limit switches are NC microswitches for dependable feedback and control.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eType 2-Position operation\u003c\/b\u003e with spring-return\u003c\/li\u003e \u003cli\u003eVoltage: \u003cb\u003e24 V AC\u003c\/b\u003e, current \u003cb\u003e0.4 A\u003c\/b\u003e\n\u003c\/li\u003e \u003cli\u003ePower rating: \u003cb\u003e5 W\u003c\/b\u003e\n\u003c\/li\u003e \u003cli\u003eConnection: \u003cb\u003e1\/2\" supply\u003c\/b\u003e, \u003cb\u003e18\" wire\u003c\/b\u003e\n\u003c\/li\u003e \u003cli\u003eBody: \u003cb\u003ePolycarbonate base\/cover\u003c\/b\u003e with aluminum plate\u003c\/li\u003e \u003cli\u003eApplications: \u003cb\u003ehydronic system\u003c\/b\u003e valves, open\/closed\u003c\/li\u003e \u003cli\u003eLimit switches: \u003cb\u003eNC microswitch\u003c\/b\u003e (auxiliary included)\u003c\/li\u003e \u003cli\u003eOperating temp: \u003cb\u003e32–104°F\u003c\/b\u003e\n\u003c\/li\u003e \u003cli\u003eCertifications: \u003cb\u003eUL 873\u003c\/b\u003e, CE, CUL\u003c\/li\u003e \u003cli\u003eIncludes auxiliary microswitch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47601995874526,"sku":"115111","price":95.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380989_31307940-4a15-486c-be79-8a9abc1c8267.jpg?v=1765814216"},{"product_id":"caleffi-z151000-motorized-zone-valve-actuator","title":"Caleffi Z151000 Motorized Zone Valve Actuator","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eCaleffi Z151000 Motorized Zone Valve Actuator\u003c\/b\u003e is a rugged, 2-position actuator designed for reliable open\/close control in hydronic systems. It operates on 24 Volt AC with a spring-return mechanism, delivering swift, dependable valve positioning in open\/closed configurations.\u003c\/p\u003e \u003cp\u003eDurable build and smart electrical details make this actuator a practical choice. The body combines polycarbonate base\/cover with an aluminum plate for strength and light weight, while approvals UL 873, CUL, and CE ensure compliance in many installations. It uses a 1\/2\" supply connection and screw-terminal wiring for straightforward setup, and includes an auxiliary microswitch along with a primary microswitch limit (NC) for precise feedback to your controller.\u003c\/p\u003e \u003cp\u003eKey specs at a glance support easy integration into your hydronic system:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVoltage: 24 VAC; Current: 0.4 A; Power: 5 W\u003c\/li\u003e \u003cli\u003eFrequency: 50\/60 Hz; Temperature range: 32–104 °F\u003c\/li\u003e \u003cli\u003eLimit switches: Microswitch (NC); Auxiliary microswitch included\u003c\/li\u003e \u003cli\u003eConnection: 1\/2\" supply; Termination: Screw terminals\u003c\/li\u003e \u003cli\u003eApplications: Motorized zone valve, open\/closed hydronic systems\u003c\/li\u003e \u003cli\u003eApprovals: UL 873, CUL, CE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47601995907294,"sku":"115116","price":99.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380993_ef2b7af7-8f1c-4ee4-b021-c88bde4eca15.jpg?v=1765814221"},{"product_id":"caleffi-z121000-motorized-zone-valve-actuator","title":"Caleffi Z121000 Motorized Zone Valve Actuator","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eCaleffi Z121000 Motorized Zone Valve Actuator\u003c\/b\u003e is a 24V AC, 2-position actuator with spring-return operation, designed for precise valve control in hydronic systems, including open or closed loop configurations. It delivers dependable valve positioning for reliable zone heating and cooling, with an integrated microswitch providing feedback for control safety and coordination with your boiler or circulator.\u003c\/p\u003e \u003cp\u003eKey specs ensure durable, code-compliant performance: 50\/60 Hz operation, 0.4 A current draw, and a 5 W power rating. Features include a 1\/2 inch supply connection, 18 inch lead wires, and a compact 4 inch width. The rugged body combines polycarbonate base\/cover with an aluminum plate for long service life in mechanical rooms or crawlspaces. Operating temperature ranges from 32 to 104 °F. It carries UL 873, CUL, and CE approvals for added confidence. Designed for simple retrofit into existing hydronic loops, it supports standard 1\/2 inch valve connections and a straightforward wiring setup. Note that an auxiliary microswitch is not included.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eVoltage: 24 V AC\u003c\/li\u003e\n\u003cli\u003eType: 2-position with spring return\u003c\/li\u003e\n\u003cli\u003eLimit switch: Microswitch (NC)\u003c\/li\u003e\n\u003cli\u003eConnections: 1\/2\" supply; 18\" wire\u003c\/li\u003e\n\u003cli\u003eConstruction: 4\" width; polycarbonate base\/cover, aluminum plate\u003c\/li\u003e\n\u003cli\u003ePower: 5 W; current 0.4 A; frequency 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003eOperating temp: 32–104 °F\u003c\/li\u003e\n\u003cli\u003eApprovals: UL 873, CUL, CE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47601995940062,"sku":"115117","price":88.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380990_9e7bb801-db9c-4ba4-be9d-d1508e33e596.jpg?v=1765814223"},{"product_id":"caleffi-521519ac-thermostatic-and-pressure-balanced-mixing-valve","title":"Caleffi 521519AC Thermostatic and Pressure Balanced Mixing Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThermostatic mixing valve delivers precise temperature control for safe, comfortable water in showers, sinks, and appliances. The Caleffi 521519AC thermostatic and pressure balanced mixing valve combines reliability with anti-scald protection for your home plumbing system.\u003c\/p\u003e\n\u003cp\u003eThe 3\/4\" sweat connections and low lead brass construction ensure durable performance, while the included adapter and temperature gauge simplify installation and monitoring. This valve is designed to balance pressure and maintain a consistent mix even when supply temperatures vary.\u003c\/p\u003e\n\u003cp\u003eDesigned for peace of mind, its thermostatic mechanism reacts quickly to temperature fluctuations, keeping hot water within a safe range and reducing scald risk.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e3\/4\" sweat connections for easy piping integration\u003c\/li\u003e \u003cli\u003eThermostatic and pressure balanced design for constant, safe temperatures\u003c\/li\u003e \u003cli\u003eLow lead brass construction for durability and compliance\u003c\/li\u003e \u003cli\u003eIncludes adapter and temperature gauge for quick setup\u003c\/li\u003e \u003cli\u003eBuilt-in checks reduce cross-flow and prevent leaks\u003c\/li\u003e \u003cli\u003eCompact, reliable unit ideal for residential plumbing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47602006196446,"sku":"265787","price":220.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380949_235d0eb1-e8ed-4c97-b760-5ace2f897247.jpg?v=1765824593"},{"product_id":"caleffi-f39807-air-and-dirt-separator-cover-and-float-assembly","title":"Caleffi F39807 Air and Dirt Separator Cover and Float Assembly","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi F39807 Air and Dirt Separator Cover and Float Assembly is built to protect and optimize your heating and cooling system’s air and dirt separator, helping maintain efficiency, reduce maintenance, and extend service life.\u003c\/p\u003e\n\u003cp\u003eThis brass cover and float assembly fits standard air and dirt separators, delivering reliable performance and easy installation across compatible heating and cooling setups. Its sturdy brass construction resists corrosion and stands up to everyday system vibrations and temperature swings.\u003c\/p\u003e\n\u003cp\u003eDesigned to shield the float and related internals, it helps maintain flow and reduce air pockets while the separator operates at peak efficiency. Excludes Vent Cap.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eBrass construction\u003c\/b\u003e provides durable corrosion resistance in harsh heating\/cooling environments.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCover and float assembly\u003c\/b\u003e designed specifically for air separator and dirt separator integration.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEasy installation\u003c\/b\u003e with common fittings for quick replacement on existing systems.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eProtects critical components\u003c\/b\u003e by safeguarding the float and actuator mechanisms.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eVent cap not included\u003c\/b\u003e to match your current venting configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIdeal for replacement projects and retrofit installations, this cover and float assembly ensures a snug fit and dependable function within most brass-bodied air and dirt separators.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47602010161374,"sku":"288047","price":49.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380976_6ec63cbe-1e47-4d89-9003-18a28fd9a620.jpg?v=1765823065"},{"product_id":"caleffi-502015a-air-vent","title":"Caleffi 502015A Air Vent","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 502015A Air Vent is a precision automatic air vent designed for heating and air conditioning systems. Built with a durable brass body and a float mechanism, this vent provides reliable air removal and protects pumps and hydronic components. The rugged construction and precise seals support long-term operation in busy mechanical rooms.\u003c\/p\u003e \u003cp\u003eWith a 1\/8 inch male-threaded inlet, it fits standard piping and withstands demanding service up to 250°F and 150 psi (40 psi venting). It handles air, water, and glycol, and features a stainless steel spring, EPDM seal, and a protective cover for long-lasting service. This model also aligns with recognized quality standards, including ISO 9001, for dependable HVAC installations.\u003c\/p\u003e \u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eBrass body for durability and corrosion resistance\u003c\/li\u003e \u003cli\u003eAutomatic float-type venting with a stainless steel spring\u003c\/li\u003e \u003cli\u003eInlet: 1\/8 in male-threaded connection\u003c\/li\u003e \u003cli\u003eTemperature rating up to 250°F and pressure rating to 150 psi (venting 40 psi)\u003c\/li\u003e \u003cli\u003eMedia compatibility with air, water, and glycol\u003c\/li\u003e \u003cli\u003eEPDM seal with protective cover for reliable operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47602012651742,"sku":"308116","price":13.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380928_7a93f8c3-febb-47f0-8dd5-c64011511a48.jpg?v=1765816752"},{"product_id":"caleffi-59829-air-and-dirt-separator-air-vent-assembly","title":"Caleffi 59829 Air and Dirt Separator Air Vent Assembly","description":"\u003cdiv\u003e\n\u003cp\u003eCaleffi 59829 Air and Dirt Separator Air Vent Assembly is built for reliable performance in heating and cooling systems. This brass air vent assembly integrates an air separator with a dirt separator and automatic venting to keep hydronic systems free of entrained air and debris.\u003c\/p\u003e\n\u003cp\u003eDesigned for easy installation and enduring operation, this air and dirt separator air vent assembly fits seamlessly into residential or commercial HVAC hydronic loops. The brass body delivers durability, corrosion resistance, and long service life in demanding temperatures.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBrass construction for durability and corrosion resistance\u003c\/li\u003e \u003cli\u003eIntegrated air and dirt separator with automatic vent\u003c\/li\u003e \u003cli\u003eIdeal for heating and cooling systems and hydronic loops\u003c\/li\u003e \u003cli\u003eEasy installation and low-maintenance operation\u003c\/li\u003e \u003cli\u003eImproved system efficiency, reduced noise, and extended equipment life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605067743454,"sku":"114959","price":101.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380921_b032512c-472d-42f7-805c-45c60956f557.jpg?v=1765814007"},{"product_id":"caleffi-551006a-air-separator","title":"Caleffi 551006A Air Separator","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eCaleffi 551006A Air Separator\u003c\/b\u003e is engineered to remove air pockets from heating and cooling systems, delivering efficient circulation and reduced pump noise. With a brass body, 1 inch nominal size, and female threaded end connections, this air separator fits a wide range of installations and offers durable performance.\u003c\/p\u003e \u003cp\u003eRated for up to 150 PSI and operating from 32 to 250 degrees F, it supports steady flow at up to 9.3 GPM. The design includes a stainless steel air vent float guide pin, an EPDM seal, and a PP air vent float for reliable air elimination and longevity. It meets multiple standards including ANAB, BSI, FM, ISO 9001, ICIM, and ANSI, ensuring quality and compatibility in professional systems.\u003c\/p\u003e \u003cp\u003eDesigned for both new installations and system retrofits, the Caleffi 551006A ensures quick, secure installation and dependable air separation in residential and commercial heating and cooling networks. Installers appreciate predictable performance and long service life.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eNominal Size: 1 Inch\u003c\/li\u003e \u003cli\u003eEnd Connections: Female Threaded\u003c\/li\u003e \u003cli\u003eBrass Body, 150 PSI Rating\u003c\/li\u003e \u003cli\u003eTemperature Range: 32–250°F\u003c\/li\u003e \u003cli\u003eFlow Rate: 9.3 GPM\u003c\/li\u003e \u003cli\u003eInclusions: Stainless Steel Air Vent Float Guide Pin, EPDM Seal, PP Air Vent Float\u003c\/li\u003e \u003cli\u003eApplication: Heating and Cooling System\u003c\/li\u003e \u003cli\u003eStandards: ANAB, BSI, FM, ISO 9001, ICIM, ANSI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605067841758,"sku":"114925","price":149.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380958_bf60f605-c342-4a7b-9769-d57289be0a28.jpg?v=1765813923"},{"product_id":"caleffi-551008a-air-separator","title":"Caleffi 551008A Air Separator","description":"\u003cdiv\u003e\n\u003cp\u003eThe Air Separator from Caleffi, model 551008A, is designed to efficiently remove air from your HVAC system. This reliable Air Separator features a brass body and a 1-1\/2 inch nominal size with female threaded end connections for easy integration.\u003c\/p\u003e \u003cp\u003eKey specs include a 4-7\/8 inch end-to-end distance, a 150 psi pressure rating, and a temperature range of 32 to 250 degrees F. With a flow rate of 9.3 GPM, it handles typical residential and commercial heating and cooling loops with confidence.\u003c\/p\u003e \u003cp\u003eInclusions: Stainless steel air vent float guide pin, EPDM seal, PP air vent float.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eBrass body\u003c\/b\u003e for durable, long-lasting performance in HVAC systems\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eNominal 1-1\/2 inch size\u003c\/b\u003e with female threaded ends for versatile installation\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eHigh flow\u003c\/b\u003e up to 9.3 GPM within a wide 32–250°F range\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEssential components\u003c\/b\u003e including stainless steel air vent float guide pin, EPDM seal, PP air vent float\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandards\u003c\/b\u003e compliant: ANAB, BSI, FM, ISO 9001, ICIM, ANSI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605067874526,"sku":"114929","price":282.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380960_21480e67-6200-48bf-b671-f7edbf1636b4.jpg?v=1765813935"},{"product_id":"caleffi-551007a-air-separator","title":"Caleffi 551007A Air Separator","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 551007A Air Separator is a brass air separator designed to remove air from hydronic heating and cooling systems, ensuring smooth operation and reduced pump wear.\u003c\/p\u003e\n\u003cp\u003eWith a nominal size of \u003cb\u003e1-1\/4 inch\u003c\/b\u003e and \u003cb\u003efemale threaded\u003c\/b\u003e end connections, it integrates easily into existing pipelines while delivering dependable air separation across a wide temperature range of \u003cb\u003e32–250°F\u003c\/b\u003e and a flow rate of \u003cb\u003e9.3 GPM\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp\u003eAs a \u003cb\u003ebrass air separator\u003c\/b\u003e optimized for \u003cb\u003eheating and cooling systems\u003c\/b\u003e, it promotes quieter operation and longer equipment life. The unit includes a \u003cb\u003estainless steel air vent float guide pin\u003c\/b\u003e, an \u003cb\u003eEPDM seal\u003c\/b\u003e, and a \u003cb\u003ePP air vent float\u003c\/b\u003e for durable performance in demanding environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eNominal Size:\u003c\/b\u003e 1-1\/4\" • \u003cb\u003eEnd Connection:\u003c\/b\u003e female threaded\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBody Material:\u003c\/b\u003e Brass • \u003cb\u003ePressure Rating:\u003c\/b\u003e 150 PSI\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature Range:\u003c\/b\u003e 32–250 °F • \u003cb\u003eFlow Rate:\u003c\/b\u003e 9.3 GPM\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eInclusions:\u003c\/b\u003e Stainless steel air vent float guide pin, EPDM seal, PP air vent float\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e Heating and cooling systems\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandards:\u003c\/b\u003e ANAB, BSI, FM, ISO 9001, ICIM, ANSI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605067940062,"sku":"114927","price":218.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380959_4ca1884d-6a73-43f3-a959-16d274ed31ae.jpg?v=1765813930"},{"product_id":"caleffi-551035a-air-separator","title":"Caleffi 551035A Air Separator","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 551035A Air Separator is engineered to remove entrapped air from heating and cooling systems, ensuring efficient operation and quieter performance. This brass-bodied air separator carries a nominal size of 1-1\/4 inch and uses solder end connections for a secure, leak-free installation.\u003c\/p\u003e \u003cp\u003eBuilt for reliability, it operates at up to 150 PSI and withstands temperatures from 32 to 250°F, delivering a flow rate of 9.3 GPM. Key components include a stainless steel air vent with a float guide pin, an EPDM seal, and a PP air vent float, all designed to stand up to demanding hydronic service.\u003c\/p\u003e \u003cp\u003eIdeal for both heating and cooling applications, the Caleffi 551035A complies with multiple industry standards (ANAB, BSI, FM, ISO 9001, ICIM, ANSI), offering confident performance in modern systems.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eNominal Size:\u003c\/b\u003e 1-1\/4 inch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnd Connections:\u003c\/b\u003e Solder\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFlow Rate:\u003c\/b\u003e 9.3 GPM\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure Rating:\u003c\/b\u003e 150 PSI\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature Range:\u003c\/b\u003e 32–250°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterials:\u003c\/b\u003e Brass body; EPDM seal; Stainless steel air vent float guide pin; PP air vent float\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnd-to-End Distance:\u003c\/b\u003e 5-3\/16 inch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e Heating and cooling systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605068038366,"sku":"114937","price":206.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380963_6ac3194d-5f05-405e-84f9-662f0eaa4ef3.jpg?v=1765813956"},{"product_id":"caleffi-na29284-air-vent-shut-off-valve","title":"Caleffi NA29284 Air Vent Shut-Off Valve","description":"\u003cdiv\u003e\n\u003cp\u003eAir Vent Shut-Off Valve provides reliable air release control for heating, cooling, glycol, and solar systems. The Caleffi NA29284 model features a brass body, a nominal size of 1\/2 inch, and end connections that are female thread x male thread for secure, easy installation.\u003c\/p\u003e \u003cp\u003eDesigned for demanding environments, this valve tolerates temperatures from -20 to 360 °F and handles up to 150 psi, ensuring dependable operation across diverse applications.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eBrass body\u003c\/b\u003e for durability and corrosion resistance\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eNominal size 1\/2 inch\u003c\/b\u003e fits standard piping\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnd connections: female thread x male thread\u003c\/b\u003e for versatile installation\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature range: -20 to 360 °F\u003c\/b\u003e suitable for hot and cold systems\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure rating: 150 psi\u003c\/b\u003e supports robust circuit performance\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications: air, fluid, glycol, solar heating systems\u003c\/b\u003e ideal for modern heating and solar setups\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal for use in air, fluid, glycol, and solar heating circuits, the valve supports efficient system startup, reduces air lock, and promotes reliable long-term performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605068497118,"sku":"115248","price":45.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380978_9554c3fd-19a5-42c0-8fee-f92c51d6c970.jpg?v=1765814581"},{"product_id":"caleffi-551004a-air-vent","title":"Caleffi 551004A Air Vent","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the \u003cb\u003eCaleffi 551004A Air Vent\u003c\/b\u003e, a high-performance automatic float air vent designed for reliable air removal in heating and air conditioning systems. The float-type mechanism automatically vents trapped air, preventing air locks and boosting system efficiency.\u003c\/p\u003e \u003cp\u003eConstructed with a brass body for durability and featuring an EPDM seal, this vent delivers long-lasting performance in demanding HVAC environments. It handles both air and water media, making it a versatile choice for modern installations. The compact, 1\/2 inch inlet with female threaded connection simplifies installation and compatibility with standard piping.\u003c\/p\u003e \u003cp\u003eOperational range: 32 to 250°F and up to 150 psi (venting 90 psi), making it suitable for most residential and commercial heating and cooling applications.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eType: Automatic, Float, High Performance\u003c\/li\u003e \u003cli\u003eBrass body with EPDM seal for durable, leak-free operation\u003c\/li\u003e \u003cli\u003eInlet: 1\/2\" female threaded connection\u003c\/li\u003e \u003cli\u003eMedia handled: Air and Water\u003c\/li\u003e \u003cli\u003eTemperature range: 32–250°F\u003c\/li\u003e \u003cli\u003ePressure rating: 150 psi (venting 90 psi)\u003c\/li\u003e \u003cli\u003eIdeal for Heating and Air Conditioning Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605068628190,"sku":"114922","price":77.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380957_c1f91564-bec7-42cf-a8af-16c2028c0384.jpg?v=1765813916"},{"product_id":"caleffi-502243a-air-vent","title":"Caleffi 502243A Air Vent","description":"\u003cdiv\u003e\n\u003cp\u003eCaleffi 502243A Air Vent is an automatic float-type air vent designed for heating systems and radiators. This brass-bodied unit with a 1\/2 inch male-threaded inlet efficiently expels trapped air from hydronic circuits, reducing noise and helping maintain steady system temperatures. Rated up to 250°F and 150 PSI (60 PSI venting), it handles both air and water media, making it versatile for boilers and convectors. With an EPDM seal and brass mechanism stem, this vent delivers reliable performance and long service life. ISO 9001 and ICIM certifications ensure quality manufacturing.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eInlet size:\u003c\/b\u003e 1\/2 inch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eInlet connection:\u003c\/b\u003e male threaded\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBody material:\u003c\/b\u003e brass\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature rating:\u003c\/b\u003e up to 250°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure rating:\u003c\/b\u003e 150 PSI (60 PSI venting)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMedia handled:\u003c\/b\u003e air and water\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSeal\/Mechanism:\u003c\/b\u003e EPDM seal with brass mechanism stem\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e heating systems and radiators\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605068660958,"sku":"114840","price":32.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380930_f2215c5d-d464-4bbe-bfad-925c6b6ac031.jpg?v=1765813718"},{"product_id":"caleffi-250041a-air-vent","title":"Caleffi 250041A Air Vent","description":"\u003cdiv\u003e\n\u003cp\u003eExperience dependable air elimination with the Caleffi 250041A Air Vent, an automatic, float-type vent designed for clean, efficient operation in heating, cooling, and solar systems. The chrome-plated brass body features a 1\/2 inch male threaded inlet, a stainless steel control spindle, and an EPDM seal, delivering long-lasting performance. Rated for temperatures from 20 to 360°F and pressures up to 150 PSI (75 PSI discharge), it handles air, water, and glycol with ease.\u003c\/p\u003e \u003cp\u003ePerfect for solar heating applications, this compact air vent prevents air locks and boosts system efficiency in closed-loop designs. Its durable brass construction and sealed cover protect internal components, ensuring reliable performance over time.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eAutomatic, float-type air vent\u003c\/b\u003e for quick, reliable air elimination in plumbing and hydronic systems.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e1\/2 inch male threaded inlet\u003c\/b\u003e with durable chrome-plated brass body.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature range 20–360°F\u003c\/b\u003e and high-pressure rating up to 150 PSI (75 PSI discharge).\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eHandles air, water, and glycol\u003c\/b\u003e (glycol-based solar mixtures) without loss of performance.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStainless steel control spindle\u003c\/b\u003e, EPDM seal, and protective cover for long life.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIdeal for solar heating systems\u003c\/b\u003e and other closed-loop setups requiring automatic venting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605068726494,"sku":"115247","price":59.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380924_800ac9de-b840-4aeb-8468-8fc90700e760.jpg?v=1765814576"},{"product_id":"caleffi-502620a-air-vent","title":"Caleffi 502620A Air Vent","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 502620A Air Vent is an automatic, float-type air vent designed for heating systems and radiators. With a brass body and a 1\/4 inch inlet male threaded connection, it efficiently releases trapped air from hot water loops, improving circulation and overall system performance.\u003c\/p\u003e\n\u003cp\u003eRated to 240°F and 150 PSI (90 PSI venting), this vent delivers reliable operation across boiler and radiator configurations. It utilizes a silicon rubber mechanism seal and an EPDM seal to ensure long-lasting performance in varying temperatures and pressures. Built to ISO 9001 and ICIM standards, it guarantees quality in professional installations.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAutomatic float-type operation for continuous venting of air\u003c\/li\u003e \u003cli\u003eBrass body for durability in heating systems\u003c\/li\u003e \u003cli\u003e1\/4 inch inlet with male threaded connection for easy installation\u003c\/li\u003e \u003cli\u003eTemperature rating up to 240°F and pressure tolerance up to 150 PSI\u003c\/li\u003e \u003cli\u003eSilicon rubber mechanism seal and EPDM seal for reliability\u003c\/li\u003e \u003cli\u003eSuitable for air and water media in radiators and heating loops\u003c\/li\u003e \u003cli\u003eISO 9001 and ICIM certified for quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605068759262,"sku":"114843","price":12.68,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380933_084766a5-8732-4db0-90be-09a28d680e20.jpg?v=1765813732"},{"product_id":"caleffi-573002a-combination-fill-valve-and-backflow-preventer","title":"Caleffi 573002A Combination Fill Valve and Backflow Preventer","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eCaleffi 573002A Combination Fill Valve and Backflow Preventer\u003c\/b\u003e delivers reliable protection for residential water supplies. This 1\/2 inch dual check backflow preventer helps prevent contamination and complies with CSA (Canada and US) and ASSE 1012 standards.\u003c\/p\u003e \u003cp\u003eBuilt with a \u003cb\u003ebrass body\u003c\/b\u003e and \u003cb\u003eEPDM seals\u003c\/b\u003e, it stands up to operation in potable water lines. It features a \u003cb\u003efemale threaded union x female threaded connection\u003c\/b\u003e, a compact \u003cb\u003e9-1\/8 inch\u003c\/b\u003e end-to-end distance, and a \u003cb\u003etemperature rating up to 150°F\u003c\/b\u003e.\u003c\/p\u003e \u003cp\u003eDesigned for water service, it supports up to \u003cb\u003e175 PSI\u003c\/b\u003e and offers an adjustable \u003cb\u003e3–60 PSI\u003c\/b\u003e pressure range, with a factory setting of \u003cb\u003e15 PSI\u003c\/b\u003e for easy installation. This unit combines a fill valve and backflow prevention in a single, space-saving package.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eType: Dual Check Backflow Preventer\u003c\/li\u003e\n\u003cli\u003eSize\/Connections: 1\/2\" female threaded union x female threaded\u003c\/li\u003e\n\u003cli\u003eMaterial: Brass body with EPDM seals\u003c\/li\u003e\n\u003cli\u003eStandards: CSA (Canada \u0026amp; US) and ASSE 1012\u003c\/li\u003e\n\u003cli\u003ePressure: 3–60 PSI range; 175 PSI maximum\u003c\/li\u003e\n\u003cli\u003eTemperature: Up to 150°F\u003c\/li\u003e\n\u003cli\u003eEnd-to-end: 9-1\/8\" length\u003c\/li\u003e\n\u003cli\u003eApplication: Water supply system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605068824798,"sku":"114965","price":170.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380970_2ca91a0b-3519-4e8a-8e5a-edd1426de9a0.jpg?v=1765814024"},{"product_id":"caleffi-551022a-compact-air-separator","title":"Caleffi 551022A Compact Air Separator","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eCompact Air Separator\u003c\/b\u003e for heating and cooling systems keeps hydronic networks free of air pockets and operating quietly. The \u003cb\u003eCaleffi 551022A Compact Air Separator\u003c\/b\u003e combines a 3\/4 inch nominal size with soldered end connections and a durable brass body.\u003c\/p\u003e\n\u003cp\u003eEngineered for reliable air removal, this unit is rated up to \u003cb\u003e150 PSI\u003c\/b\u003e and supports a temperature range of \u003cb\u003e32–250°F\u003c\/b\u003e. With a \u003cb\u003e6 GPM\u003c\/b\u003e flow rate, it suits both residential and light commercial loops. The assembly includes a \u003cb\u003estainless steel air vent\u003c\/b\u003e with a guide pin, \u003cb\u003eEPDM seal\u003c\/b\u003e, and a \u003cb\u003ePP air vent float\u003c\/b\u003e to ensure steady operation and long service life.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eNominal Size:\u003c\/b\u003e 3\/4 Inch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnd Connection:\u003c\/b\u003e Soldered\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBody Material:\u003c\/b\u003e Brass\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFlow Rate:\u003c\/b\u003e 6 GPM\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure Rating:\u003c\/b\u003e 150 PSI\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature Range:\u003c\/b\u003e 32–250°F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eVent Components:\u003c\/b\u003e Stainless Steel Air Vent Float, EPDM Seal, PP Air Vent Float\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e Heating and Cooling System\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCertifications:\u003c\/b\u003e ANAB, BSI, FM, ISO 9001, ICIM, ANSI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605068955870,"sku":"114933","price":89.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380961_51874428-16cd-4b0d-bfb2-70e19a51ba71.jpg?v=1765813944"},{"product_id":"caleffi-519502a-differential-pressure-bypass-valve","title":"Caleffi 519502A Differential Pressure Bypass Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe Differential Pressure Bypass Valve is the essential solution for protecting fixed speed circulating pumps. The Caleffi 519502A model features a 3\/4 inch nominal size brass body designed for durable performance, with a temperature range of 32 to 230 Deg F and a pressure rating up to 150 PSI. This by-pass valve helps balance pressure differences and prevent pump overload in domestic and radiant heating systems.\u003c\/p\u003e \u003cp\u003eConstructed for reliability, the valve uses corrosion resistant materials and convenient components to ensure smooth operation and easy maintenance. It pairs a brass valve plug with EPDM gaskets and O-rings, plus asbestos-free NBR seals for long life. The stainless steel spring delivers consistent response, while the ABS plastic control knob provides simple manual adjustment.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eNominal size: 3\/4 inch; End connections: Female Threaded Union x Male Threaded Union\u003c\/li\u003e \u003cli\u003eBrass body with stainless steel spring for durability\u003c\/li\u003e \u003cli\u003eInclusions: Brass Valve Plug, EPDM Valve Plug Gasket, EPDM O-Ring Seal, Asbestos Free NBR Union Seal\u003c\/li\u003e \u003cli\u003eABS plastic control knob for easy operation\u003c\/li\u003e \u003cli\u003eFlow rating up to 9 GPM\u003c\/li\u003e \u003cli\u003eApplication: Fixed Speed Circulating Pump\u003c\/li\u003e \u003cli\u003eApplicable standards: ISO 9001, FM 21654, BSI\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal for boiler and hydronic systems requiring reliable differential pressure management and energy-efficient operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605069119710,"sku":"114851","price":119.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380938_6b6bd99b-4fd2-499a-86de-f1507dc2f1ab.jpg?v=1765813761"},{"product_id":"caleffi-553642a-filling-valve-pressure-gauge","title":"Caleffi 553642A Filling Valve\/Pressure Gauge","description":"\u003cdiv\u003e\n\u003cp\u003eFilling Valve\/Pressure Gauge, the Caleffi 553642A, delivers precise filling and accurate pressure monitoring for hydronic systems. This automatic, pre-adjustable unit combines a brass body with a PA 66 GF 30 cover and NBR seal to withstand temperatures up to 150°F and a pressure rating up to 230 PSI. With a nominal size of 1\/2 inch and end connections as male threaded union x female threaded union, it fits typical piping layouts. The end-to-end distance is 4-3\/4 inches, and the unit supports a pressure setting range from 3 to 60 PSI, with a factory setting at 15 PSI and a 0-60 PSI gauge scale for easy readings. The unit is suitable for CSA-standard installations and features a visual system pressure indicator for quick status checks.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Automatic, Pre-Adjustable\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eNominal Size:\u003c\/b\u003e 1\/2 inch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnd Connections:\u003c\/b\u003e Male Threaded Union x Female Threaded Union\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnd to End Distance:\u003c\/b\u003e 4-3\/4 inch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Brass body; PA 66 GF 30 cover; NBR seal\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure Range:\u003c\/b\u003e 3–60 PSI (Factory setting 15 PSI)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eGauge:\u003c\/b\u003e 0–60 PSI scale\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTemperature Rating:\u003c\/b\u003e 150°F max\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandards:\u003c\/b\u003e CSA (Canada and US)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplication:\u003c\/b\u003e Visual system pressure indicator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605069218014,"sku":"317615","price":113.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380969_c48de821-925c-458f-8e74-246ee8228fe3.jpg?v=1765820734"},{"product_id":"caleffi-553542a-filling-valve","title":"Caleffi 553542A Filling Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eCaleffi 553542A Filling Valve\u003c\/b\u003e is an automatic, pre-adjustable filling valve designed for precise, reliable boiler and hydronic system fill pressure. With a 1\/2 inch nominal size and end connections of Female Threaded Union x Male Threaded Union, this brass-bodied valve delivers durable performance and easy field adjustments.\u003c\/p\u003e \u003cp\u003eIts compact 4-3\/4 inch end-to-end distance, 150°F temperature rating, and 230 PSI pressure rating make it suitable for a wide range of residential and commercial installations. The unit features a PA 66 GF 30 cover and NBR seal for long-lasting reliability, plus a Visual System Pressure Indicator to monitor pressure at a glance. It complies with CSA standards for Canada and the US, with a pressure setting range of 3 to 60 PSI and a factory setting of 15 PSI. The gauge scales 0 to 60 PSI, ensuring accurate control.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAutomatic, pre-adjustable filling valve for boilers and hydronic systems\u003c\/li\u003e \u003cli\u003eBrass body with NBR seal and PA 66 GF 30 cover for durability\u003c\/li\u003e \u003cli\u003e1\/2 inch nominal size; Female Threaded Union x Male Threaded Union end connections; 4-3\/4 inch overall length\u003c\/li\u003e \u003cli\u003ePressure setting range 3 to 60 PSI; factory setting 15 PSI; 0 to 60 PSI gauge\u003c\/li\u003e \u003cli\u003eCSA (Canada and US) compliant; Visual System Pressure Indicator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605069250782,"sku":"114963","price":101.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380966_d047743f-71e6-4ccd-b116-dbab513c89c9.jpg?v=1765814014"},{"product_id":"caleffi-553549a-filling-valve","title":"Caleffi 553549A Filling Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe Filling Valve from the Caleffi 553549A line provides automatic, pre-adjustable filling for boiler and hydronic systems. The Caleffi 553549A Filling Valve combines a brass body with a durable PA 66 GF 30 cover for long-lasting performance.\u003c\/p\u003e \u003cp\u003eDesigned for a \u003cb\u003e1\/2 inch nominal size\u003c\/b\u003e installation, this valve uses \u003cb\u003esoldered union x female threaded union\u003c\/b\u003e end connections and measures \u003cb\u003e4-3\/4 inches\u003c\/b\u003e from end to end. It is rated for temperatures up to \u003cb\u003e150°F\u003c\/b\u003e and pressures up to \u003cb\u003e230 PSI\u003c\/b\u003e, with a factory setting of \u003cb\u003e15 PSI\u003c\/b\u003e and an adjustable range of \u003cb\u003e3–60 PSI\u003c\/b\u003e. A built-in \u003cb\u003evisual system pressure indicator\u003c\/b\u003e aids quick monitoring, while the device complies with \u003cb\u003eCSA\u003c\/b\u003e standards for North American use.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1\/2\" nominal size; End connections: soldered union x female threaded union\u003c\/li\u003e \u003cli\u003eBrass body with NBR seal and PA 66 GF 30 cover\u003c\/li\u003e \u003cli\u003eAutomatic, pre-adjustable filling with factory setting 15 PSI\u003c\/li\u003e \u003cli\u003ePressure setting range 3–60 PSI; gauge scale 0–60 PSI\u003c\/li\u003e \u003cli\u003eTemperature rating 150°F; pressure rating 230 PSI\u003c\/li\u003e \u003cli\u003eEnd-to-end distance 4-3\/4 inches; CSA standard compliant\u003c\/li\u003e \u003cli\u003eVisual system pressure indicator for easy monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605069349086,"sku":"114964","price":95.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380968_b6092ac9-f05e-490c-bbb0-5964c5f6d406.jpg?v=1765814017"},{"product_id":"caleffi-626600a-flow-switch","title":"Caleffi 626600A Flow Switch","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 626600A Flow Switch is a paddle-type, universal flow switch designed for reliable flow detection in HVAC and hydronic systems. With a 1 inch nominal size and a male threaded end connection, this brass-enclosed unit delivers rugged performance in challenging environments.\u003c\/p\u003e \u003cp\u003eDesigned for durability, the stainless steel sensor, brass enclosure, and protective NEMA 5 enclosure with IP54 protection ensure dependable operation in damp or dusty settings. It handles up to 15 amps, a flow rate of 5.7 GPM, and a wide temperature range from -20 to 250°F, up to 150 PSI.\u003c\/p\u003e \u003cp\u003eIncluded components ensure long-term reliability: EPDM O-Ring seal, stainless steel microswitch spring, and a polycarbonate cover.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePaddle-type universal flow switch for versatile flow detection\u003c\/li\u003e \u003cli\u003e1 inch nominal size with male threaded end connection\u003c\/li\u003e \u003cli\u003eBrass enclosure with NEMA 5 and IP54 protection; stainless steel sensor\u003c\/li\u003e \u003cli\u003eIncludes EPDM O-Ring seal, stainless steel microswitch spring, and polycarbonate cover\u003c\/li\u003e \u003cli\u003eElectrical: 15 A rating; max 150 PSI; flow 5.7 GPM; temperature -20 to 250°F\u003c\/li\u003e \u003cli\u003eCertifications: UL (Canada\/US), CE, ANAB, FM, ICIM, ISO 9001\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605069414622,"sku":"114982","price":234.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380975_d76bc4bf-fb35-453e-841e-46c34b98aa78.jpg?v=1765814058"},{"product_id":"caleffi-z126000-motorized-zone-valve-actuator","title":"Caleffi Z126000 Motorized Zone Valve Actuator","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eCaleffi Z126000 Motorized Zone Valve Actuator\u003c\/b\u003e delivers precise, reliable control for hydronic systems. This Type 2-Position, spring-return actuator operates on 120V AC to move a zone valve between open and closed positions with quick, repeatable action.\u003c\/p\u003e \u003cp\u003eBuilt for durability, its polycarbonate base and cover with an aluminum plate withstand daily HVAC use. A NC microswitch limit switch confirms valve position, while a 1\/2 inch supply connection and 6 inch wire leads simplify installation. The unit is designed for motorized zone valve applications in open or closed hydronic systems and is UL 873, CUL and CE approved.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eVoltage\/current\u003c\/b\u003e: 120 VAC; 0.25–5 A; Power 5 W\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOperation\u003c\/b\u003e: Type 2-Position, Spring Return\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConnections\u003c\/b\u003e: 1\/2 inch supply; 6 inch wire\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConstruction\u003c\/b\u003e: Polycarbonate housing (base\/cover); aluminum plate\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications\u003c\/b\u003e: Motorized zone valve; suitable for hydronic systems in open\/closed configurations\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCertifications\u003c\/b\u003e: UL 873, CUL, CE\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLimit switch\u003c\/b\u003e: NC microswitch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eNote\u003c\/b\u003e: Excludes auxiliary microswitch\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Z126000 for dependable, UL-listed control that simplifies installation and delivers consistent climate control in everyday hydronic setups.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605069742302,"sku":"115118","price":88.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380991_4f7a0456-21e7-4f7f-8118-7339612f5178.jpg?v=1765814226"},{"product_id":"caleffi-z40-motorized-zone-valve","title":"Caleffi Z40 Motorized Zone Valve","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eThe Caleffi Z40 Motorized Zone Valve\u003c\/b\u003e is a reliable 2-way valve designed for precise zone control in heating and air conditioning systems. Featuring inverted flare x inverted flare end connections and a spring-return electric actuator, it opens to regulate hot or chilled water with dependable on\/off performance.\u003c\/p\u003e \u003cp\u003eBuilt with a brass body, stainless steel stem, EPDM seal and paddle, this valve withstands demanding HVAC conditions. It handles media from hot to chilled water across a wide temperature range (32–240°F) and a high pressure rating up to 300 psi. The actuator provides fast, predictable action with a 60-second open and 6-second close timing. Power is supplied by 24 V AC at 50\/60 Hz (0.4 A, 5 W, 7 VA). The push-button mounting offers easy installation and serviceability.\u003c\/p\u003e \u003cp\u003eDesigned for safe, compliant operation, it is lead-free and UL listed (Canada and US) with NSF\/ANSI 372 and ICC-ES PMG certifications. The valve features 18-inch wire leads and a flow capacity of 3.5 Cv, making it suitable for a range of HVAC applications.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e 2-Way motorized zone valve\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConnections:\u003c\/b\u003e Inverted flare x inverted flare\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eActuation:\u003c\/b\u003e Spring-return, 24V AC, 0.4 A, 5 W, 7 VA\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterials:\u003c\/b\u003e Brass body, stainless steel stem, EPDM seal and paddle\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMedia \u0026amp; Range:\u003c\/b\u003e Hot\/chilled water; 32–240°F; 300 psi\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePerformance:\u003c\/b\u003e 60 s open, 6 s close; 3.5 Cv\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCertifications:\u003c\/b\u003e UL (Canada\/US), NSF\/ANSI 372, ICC-ES PMG; lead-free\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLead \u0026amp; Wiring:\u003c\/b\u003e 18-inch wire leads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605069840606,"sku":"115174","price":138.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380982_11362522-ddef-4a68-8655-574eb92c32ae.jpg?v=1765814343"},{"product_id":"caleffi-z56-motorized-zone-valve","title":"Caleffi Z56 Motorized Zone Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi Z56 Motorized Zone Valve delivers precise control for heating and cooling systems. This 1 inch nominal, 2-way valve features a brass body, stainless steel stem, and EPDM paddle seal for durability and reliable shutoff.\u003c\/p\u003e\n\u003cp\u003eThe electric actuator is spring-return with 24 V AC input at 50\/60 Hz, drawing 0.4 A and rated at 5 W. It opens in 60 seconds and closes in 6 seconds, ideal for zone control in a residential or commercial HVAC system. The valve handles hot or chilled water, with a maximum inlet pressure of 300 PSI and a temperature range of 32 to 240°F.\u003c\/p\u003e\n\u003cp\u003eDesigned for push-button mounting and soldered end connections, it includes a stainless steel stem, EPDM seal, and a machined brass seat for long-lasting performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2-Way flow; 1\" nominal size; soldered x soldered connections\u003c\/li\u003e\n\u003cli\u003eSpring-return electric actuator; 24 V AC, 0.4 A, 5 W\u003c\/li\u003e\n\u003cli\u003eBrass body with stainless steel stem and EPDM paddle seal\u003c\/li\u003e\n\u003cli\u003ePaddle and machined brass seat for reliable seating\u003c\/li\u003e\n\u003cli\u003eHot and chilled water service; 32–240°F; 300 PSI maximum\u003c\/li\u003e\n\u003cli\u003ePush-button mounting; 18\" wire lead length\u003c\/li\u003e\n\u003cli\u003eLead-free construction; UL listed; NSF\/ANSI 372; ICC-ES PMG\u003c\/li\u003e\n\u003cli\u003eFlow capacity: 7.5 CV\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605069873374,"sku":"115184","price":185.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380987_0f233d87-0268-4a4a-9b94-270e423796fc.jpg?v=1765814382"},{"product_id":"caleffi-z200537-motorized-zone-valve","title":"Caleffi Z200537 Motorized Zone Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi Z200537 Motorized Zone Valve is a 2-Way, 3\/4 inch valve designed for precise HVAC zoning with electric spring-return actuation. The brass body, stainless steel stem, and EPDM rubber seal deliver durable performance for hot and chilled water in heating and air conditioning systems. This model features a normally open (NO) valve position and fast timing for responsive control.\u003c\/p\u003e \u003cp\u003eKey specifications ensure reliable operation in demanding environments: a 24 V AC input, 60-second open and 6-second close timing, and a 7 CV flow capacity. With lead-free construction and compliance to UL (Canada and US), NSF\/ANSI 372, and ICC-ES PMG standards, the Z200537 is built for code-compliant, long-lasting service. The push-button mounting simplifies installation and servicing in tight mechanical spaces.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e 2-Way, normally open\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSize \u0026amp; connections:\u003c\/b\u003e 3\/4\" nominal, soldered x soldered\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eActuation:\u003c\/b\u003e Electric spring-return; 24 V AC, 0.4 A\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterials:\u003c\/b\u003e Brass body; stainless steel stem; EPDM seal and paddle; machined brass seat\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePerformance:\u003c\/b\u003e 60 s open, 6 s close; 7 CV; 5 W\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMedia \u0026amp; temp:\u003c\/b\u003e Hot or chilled water; 32–240 °F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure:\u003c\/b\u003e 300 PSI static, 15 PSI steam\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandards:\u003c\/b\u003e UL (US \u0026amp; Canada), NSF\/ANSI 372, ICC-ES PMG; lead-free\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eElectrical \u0026amp; mounting:\u003c\/b\u003e 18\" wire lead; push-button mount\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605069938910,"sku":"115148","price":50.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380994_9e01c210-fff3-4ffe-91d8-8db0636be4e7.jpg?v=1765814288"},{"product_id":"caleffi-z45-motorized-zone-valve","title":"Caleffi Z45 Motorized Zone Valve","description":"\u003cdiv\u003e\n\u003cp\u003eCaleffi Z45 Motorized Zone Valve is a reliable 2-Way, 3\/4 inch valve designed for precise control in heating and cooling systems. The spring-return electric actuator operates on 24 V AC, delivering dependable actuation as it opens in about 60 seconds and closes in 6 seconds.\u003c\/p\u003e \u003cp\u003eBuilt with a brass body, this zone valve features a stainless steel stem, EPDM rubber seal and paddle, and a machined brass seat for durable hot or chilled water service. End connections are soldered x soldered, and the unit mounts via a convenient push-button mounting interface.\u003c\/p\u003e \u003cp\u003eOperating from a 32 to 240 deg F temperature range and rated up to 300 PSI, it handles a wide scope of HVAC installations. The valve offers a flow capacity of 7.5 Cv and draws 5 W (7 VA) while powered by 24 V control. It is lead-free and compliant with UL (Canada and US), NSF\/ANSI 372, and ICC-ES PMG standards.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e 2-Way, 3\/4\" nominal size\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnd connections:\u003c\/b\u003e Soldered x Soldered; \u003cb\u003eMounting:\u003c\/b\u003e Push Button\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eActuation:\u003c\/b\u003e Spring Return, Electric; \u003cb\u003eInput:\u003c\/b\u003e 24 V AC at 50\/60 Hz, 0.4 A\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMedia:\u003c\/b\u003e Hot or chilled water; \u003cb\u003eBody:\u003c\/b\u003e Brass; \u003cb\u003eStem:\u003c\/b\u003e Stainless steel; \u003cb\u003eSeal\/Paddle:\u003c\/b\u003e EPDM\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLead-free\u003c\/b\u003e construction; \u003cb\u003eFlow:\u003c\/b\u003e 7.5 Cv; \u003cb\u003ePressure:\u003c\/b\u003e 300 PSI\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePower:\u003c\/b\u003e 5 W \/ 7 VA; \u003cb\u003eWire lead length:\u003c\/b\u003e 18 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070004446,"sku":"115177","price":145.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380983_a5a78aee-9cee-47e2-818d-468cce153b9f.jpg?v=1765814353"},{"product_id":"caleffi-z55-motorized-zone-valve","title":"Caleffi Z55 Motorized Zone Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eCaleffi Z55 Motorized Zone Valve\u003c\/b\u003e delivers precise zone control for heating and cooling systems. This 2-Way valve, with a 3\/4 inch nominal size, uses soldered end connections and a spring-return electric actuator for reliable, automatic operation.\u003c\/p\u003e \u003cp\u003eDesigned for hot and chilled water applications, it features a brass body, stainless steel stem, EPDM seal and paddle, and a machined brass seat for tight shutoff. The valve is normally open (NO) and offers fast timing with 60 seconds to open and 6 seconds to close, making it ideal for modern HVAC setups. It operates on 24V AC at 50\/60 Hz (0.4 A) and handles up to 300 PSI. With a flow capacity of 7.5 CV and a compact push-button mounting, it's ready for simple integration into your control system.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e2-Way motorized zone valve with programmable operation\u003c\/li\u003e \u003cli\u003eNominal size 3\/4\", end connections: soldered x soldered\u003c\/li\u003e \u003cli\u003eActuation: spring-return, electric; valve position: normally open (NO)\u003c\/li\u003e \u003cli\u003eBrass body, stainless steel stem, EPDM rubber seal and paddle\u003c\/li\u003e \u003cli\u003eMachined brass seat; media: hot\/chilled water\u003c\/li\u003e \u003cli\u003eTemperature range: 32–240°F; pressure rating: 300 PSI\u003c\/li\u003e \u003cli\u003ePower: 5 W, 7 VA; input: 24V AC, 50\/60 Hz, 0.4 A\u003c\/li\u003e \u003cli\u003eLead-free construction; wire lead length: 18 in; push-button mounting\u003c\/li\u003e \u003cli\u003eCertifications: UL (Canada\/US), NSF\/ANSI 372, ICC-ES PMG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070037214,"sku":"115183","price":149.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380985_37aa1567-b110-4b60-9657-e96645a21bc1.jpg?v=1765814375"},{"product_id":"caleffi-521619ac-thermostatic-and-pressure-balanced-mixing-valve","title":"Caleffi 521619AC Thermostatic and Pressure Balanced Mixing Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cb\u003eCaleffi 521619AC Thermostatic and Pressure Balanced Mixing Valve\u003c\/b\u003e delivers safe, reliable hot water for residential and commercial installations. This 1\" sweat‑connection mixing valve from the Caleffi 521619AC line combines sophisticated thermostatic control with a pressure balanced design to maintain a constant outlet temperature even during pressure or supply temperature changes.\u003c\/p\u003e \u003cp\u003eBuilt from \u003cb\u003elow lead brass\u003c\/b\u003e and featuring an included adapter and temperature gauge, this valve meets modern plumbing codes while simplifying installation. Its compact form fits a wide range of plumbing configurations, reducing hot water fluctuations and scald risk.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eThermostatic control\u003c\/b\u003e ensures precise temperature regulation for comfort and safety\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure balanced design\u003c\/b\u003e prevents sudden temperature swings during incoming pressure changes\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e1\" sweat connections\u003c\/b\u003e for easy, solder-free installation\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCheck valves\u003c\/b\u003e protect against backflow and cross‑contamination\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLow lead brass construction\u003c\/b\u003e meets code requirements and long-term durability\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAdapter and temperature gauge included\u003c\/b\u003e for straightforward setup and monitoring\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Caleffi 521619AC for trusted performance in showers, sinks, and radiant systems where consistent water temperature is essential.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070102750,"sku":"265788","price":253.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380953_fdaa7fc7-b76c-4999-a810-5cc7a1ee2867.jpg?v=1765824596"},{"product_id":"caleffi-521609a-thermostatic-and-pressure-balanced-mixing-valve","title":"Caleffi 521609A Thermostatic and Pressure Balanced Mixing Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 521609A Thermostatic and Pressure Balanced Mixing Valve offers precise thermostatic control and stable pressure balance for domestic hot water, hydronic and radiant heating systems. This 3-Way, adjustable valve is a 1 inch nominal size with soldered x soldered x soldered end connections for reliable blending and safe, comfortable temperatures.\u003c\/p\u003e \u003cp\u003eConstructed with a brass body and robust internals, it withstands up to 200 PSI and temperatures up to 200°F. The valve delivers a set temperature range of 85–150°F, a flow rate of 1 GPM, and a 3 CV flow capacity, with a maximum differential pressure of 20 PSI and a maximum inlet pressure ratio of 2:1 (H\/C or C\/H). A stainless steel spring, EPDM seal, and PPO shutter contribute to long-lasting performance.\u003c\/p\u003e \u003cp\u003eIt is lead-free and complies with ASSE 1017, CSA B125.3, NSF\/ANSI 372, IPC, IRC, UPC, NPC, making it suitable for residential and commercial applications.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eType: 3-Way thermostatic mixing valve\u003c\/li\u003e\n\u003cli\u003eNominal size: 1 inch; end connections: soldered x soldered x soldered\u003c\/li\u003e\n\u003cli\u003eSet temperature range: 85–150°F; temperature rating: 200°F\u003c\/li\u003e\n\u003cli\u003eFlow: 1 GPM; CV: 3; max differential pressure: 20 PSI\u003c\/li\u003e\n\u003cli\u003eMaterials: brass body; stainless steel spring; EPDM seal; PPO shutter; lead-free\u003c\/li\u003e\n\u003cli\u003eApplications: Domestic hot water, hydronic and radiant heating systems\u003c\/li\u003e\n\u003cli\u003eDimensions (approx.): End-to-End 6-1\/8\", Base to Inlet 6-7\/16\", Inlet to Mixing Outlet 6-7\/16\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070201054,"sku":"114867","price":198.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380951_62c79f80-9f3e-4b89-ad8e-b4f90c6ce25e.jpg?v=1765813782"},{"product_id":"caleffi-521619a-thermostatic-and-pressure-balanced-mixing-valve","title":"Caleffi 521619A Thermostatic and Pressure Balanced Mixing Valve","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eCaleffi 521619A thermostatic and pressure balanced mixing valve\u003c\/b\u003e delivers precise temperature control for domestic hot water, hydronic, and radiant heating systems. This 3-way, adjustable valve blends hot and cold water with a dependable thermostatic element to maintain a stable outlet temperature as supply conditions vary. The brass body is 1 inch nominal, with end connections soldered x soldered x soldered, and the unit fits in a compact footprint with end-to-end distance of 6-1\/8 inch and base-to-inlet and inlet-to-mixing-outlet distances of 7-13\/16 inch. Rated for up to 200°F and 200 PSI, it handles demanding residential and light commercial applications while supporting a maximum differential pressure of 20 PSI and a 2:1 inlet ratio.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eThermostatic, pressure‑balanced 3‑way design\u003c\/b\u003e for consistent comfort and safe domestic hot water\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e1\" nominal size\u003c\/b\u003e with end connections soldered x soldered x soldered\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet temperature 85–150°F\u003c\/b\u003e; temperature rating to 200°F; max pressure 200 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFlow capacity\u003c\/b\u003e 1 GPM (3 CV) for reliable distribution\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLead-free brass body\u003c\/b\u003e with stainless steel spring, EPDM seal, PPO shutter; compliant with ASSE 1017, CSA B125.3, NSF\/ANSI 372\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070332126,"sku":"170139","price":229.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380952_809e749b-52a2-4c28-acd8-f7ba55252cb2.jpg?v=1765817438"},{"product_id":"caleffi-521409a-thermostatic-and-pressure-balanced-mixing-valve","title":"Caleffi 521409A Thermostatic and Pressure Balanced Mixing Valve","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eCaleffi 521409A Thermostatic and Pressure Balanced Mixing Valve\u003c\/b\u003e delivers precise hot-water control for domestic hot water, hydronic and radiant heating systems. This 3-way, adjustable valve blends hot and cold water with a thermostatic and pressure-balanced design to maintain a stable output temperature, reducing scald risk and improving comfort.\u003c\/p\u003e \u003cp\u003eKey specifications include a nominal 1\/2 inch size with soldered x soldered x soldered end connections, and a flow rate of 1 GPM. The set temperature range is 85 to 150 °F, with a maximum operating temperature of 200 °F and a pressure rating of 200 PSI. The valve supports a flow capacity of 3 CV and a maximum differential pressure of 20 PSI, with a maximum inlet ratio of 2:1 (hot\/cold or cold\/hot).\u003c\/p\u003e \u003cp\u003eKey features:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eThree-way, thermostatic and pressure-balanced mixing valve for consistent water temperature\u003c\/li\u003e \u003cli\u003eNominal size 1\/2 inch with soldered end connections for reliable installation\u003c\/li\u003e \u003cli\u003eFlow rate 1 GPM and flow capacity 3 CV for steady performance\u003c\/li\u003e \u003cli\u003eLead-free construction meets ASSE 1017, CSA B125.3, NSF\/ANSI 372, IPC, IRC, UPC, NPC standards\u003c\/li\u003e \u003cli\u003eSet temperature range 85–150 °F; max temperature 200 °F; max inlet 200 PSI\u003c\/li\u003e \u003cli\u003eMaximum differential pressure 20 PSI; maximum inlet ratio 2:1\u003c\/li\u003e \u003cli\u003eInclusions: stainless steel spring, EPDM seal, PPO shutter for durability\u003c\/li\u003e \u003cli\u003eApplications: domestic hot water, hydronic and radiant heating systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eBuilt to meet multiple plumbing standards and designed for lead-free performance, this valve ensures safe, reliable temperature control in residential and light commercial installations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070495966,"sku":"114863","price":159.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380941_aaa18bd4-a14c-45c1-a972-fc70629ae7a7.jpg?v=1765813770"},{"product_id":"caleffi-521509a-thermostatic-and-pressure-balanced-mixing-valve","title":"Caleffi 521509A Thermostatic and Pressure Balanced Mixing Valve","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eCaleffi 521509A Thermostatic and Pressure Balanced Mixing Valve\u003c\/b\u003e delivers precise temperature control for domestic hot water, hydronic, and radiant heating systems. This Type 3-Way, adjustable thermostatic mixing valve features a 3\/4 inch nominal size and soldered end connections on all ports, with an end-to-end distance of 5 inches. The brass body is lead-free, engineered for reliability in busy plumbing environments, and designed to maintain steady outlet temperatures even under fluctuating supply conditions.\u003c\/p\u003e \u003cp\u003eSetpoint and performance specs ensure safe, predictable operation. The valve supports a set temperature range from 85 to 150°F, a temperature rating up to 200°F, and a pressure rating of 200 PSI. Its robust flow characteristics include a 1 GPM flow rate and a 3 CV flow capacity, with a maximum differential pressure of 20 PSI.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eType: 3-Way thermostatic mixing valve\u003c\/li\u003e \u003cli\u003eNominal size: 3\/4 inch\u003c\/li\u003e \u003cli\u003eEnd connections: Soldered x Soldered x Soldered\u003c\/li\u003e \u003cli\u003eFlow rate \/ capacity: 1 GPM; 3 CV\u003c\/li\u003e \u003cli\u003eSet temperature: 85–150°F (200°F max)\u003c\/li\u003e \u003cli\u003ePressure rating: 200 PSI; Max ΔP: 20 PSI\u003c\/li\u003e \u003cli\u003eInclusions: Stainless steel spring, EPDM seal, PPO shutter\u003c\/li\u003e \u003cli\u003eApplications: Domestic hot water, hydronic and radiant heating\u003c\/li\u003e \u003cli\u003eLead-free\u003c\/li\u003e \u003cli\u003eStandards: ASSE 1017, CSA B125.3, NSF\/ANSI 372, IPC, IRC, UPC, NPC\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for professional installations, this valve provides dependable, code-compliant performance in a compact footprint with standard piping layouts and reliable safety features.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070561502,"sku":"114865","price":166.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380946_e846ba45-933d-4121-983d-129baaa865e6.jpg?v=1765813777"},{"product_id":"caleffi-521419ac-thermostatic-and-pressure-balanced-mixing-valve","title":"Caleffi 521419AC Thermostatic and Pressure Balanced Mixing Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 521419AC Thermostatic and Pressure Balanced Mixing Valve delivers precise temperature control for domestic hot water, hydronic, and radiant heating systems. This thermostatic and pressure balanced mixing valve combines safety, efficiency, and durable brass construction to perform under up to 200 PSI and a 2:1 inlet pressure ratio.\u003c\/p\u003e \u003cp\u003eWith a nominal size of 1\/2 inch and soldered end connections, it fits compact installations while maintaining reliable performance. The set temperature range spans 85 to 150 Deg F, and the unit carries a 200 Deg F temperature rating for versatile applications. The assembly supports a flow rate of 1 GPM and a flow capacity of 3 CV, suitable for typical domestic hot water, radiant heating, and hydronic circuits. Maximum differential pressure is 20 PSI, and the maximum inlet pressure ratio is 2:1 (H\/C or C\/H).\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eNominal Size\u003c\/b\u003e: 1\/2 inch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eEnd Connections\u003c\/b\u003e: Soldered x Soldered x Soldered\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSet Temperature Range\u003c\/b\u003e: 85–150 Deg F\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFlow\u003c\/b\u003e: 1 GPM (Flow Capacity 3 CV)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure Rating\u003c\/b\u003e: 200 PSI; Maximum Differential Pressure 20 PSI\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eInclusions\u003c\/b\u003e: Check valve, stainless steel spring, EPDM seal, PPO shutter\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandards \u0026amp; Compliance\u003c\/b\u003e: ASSE 1017, CSA B125.3, NSF\/ANSI 372, IPC, IRC, UPC, NPC; Lead-Free\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070627038,"sku":"321735","price":206.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380944_5a1a9276-809b-408f-8c6e-387e1b3763c9.jpg?v=1765812620"},{"product_id":"caleffi-521500a-thermostatic-and-pressure-balanced-mixing-valve","title":"Caleffi 521500A Thermostatic and Pressure Balanced Mixing Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 521500A Thermostatic and Pressure Balanced Mixing Valve delivers precise, safe temperature control for domestic hot water, hydronic and radiant heating systems. The Caleffi 521500A Thermostatic and Pressure Balanced Mixing Valve combines durable brass construction with accurate mixing to stabilize outlet temperatures across varying supply conditions.\u003c\/p\u003e\n\u003cp\u003eDesigned for a 3\/4\" nominal size with end connections as three male threaded ends, it fits standard piping while delivering reliable performance. Key specs include a set temperature range of 85 to 150 Deg F (temperature rating up to 200 Deg F), a 200 PSI pressure rating, and a 1 GPM flow capacity. The unit also supports a maximum differential pressure of 20 PSI and a 2:1 inlet-to-outlet pressure ratio for safe operation in hot water and radiant systems.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eThermostatic \u0026amp; pressure balanced:\u003c\/b\u003e maintains stable outlet temperature despite supply fluctuations.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCompact, three male threaded inlets\/outlets:\u003c\/b\u003e 3\/4\" nominal size with end connections for easy installation.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDurable materials:\u003c\/b\u003e brass body, stainless steel spring, EPDM seal, PPO shutter; lead-free.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePerformance:\u003c\/b\u003e 1 GPM flow, 20 PSI max differential, 200 PSI maximum inlet pressure.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandards \u0026amp; applications:\u003c\/b\u003e ASSE 1017, CSA B125.3, NSF\/ANSI 372, IPC, IRC, UPC, NPC; ideal for domestic hot water, hydronic, and radiant heating systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Caleffi 521500A for reliable temperature control, long service life, and compliant performance in modern plumbing installations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070692574,"sku":"114864","price":174.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380945_c2cb54fa-6125-4128-8d50-f6c199e082ea.jpg?v=1765813775"},{"product_id":"caleffi-59756","title":"Caleffi 59756","description":"\u003cdiv\u003e\n\u003cp\u003eThe Caleffi 59756 Discal Air Vent for Steel Body delivers dependable automatic air removal for hydronic systems. This compact air vent is built with a robust steel body and precision components to prevent air locks in heating and cooling loops.\u003c\/p\u003e \u003cp\u003eDesigned for long-term performance in steel piping networks, the Discal Air Vent removes trapped air efficiently, reducing noise and improving heat transfer. Its easy installation, durable seals, and corrosion-resistant materials make it suitable for hot water and steam applications alike.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eAutomatic air removal\u003c\/b\u003e for continuous system efficiency\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDurable steel body\u003c\/b\u003e construction for rugged environments\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCompact design\u003c\/b\u003e that fits tight spaces and retrofit projects\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCorrosion-resistant seals\u003c\/b\u003e and components for long service life\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eWide compatibility\u003c\/b\u003e with standard hydronic setups including hot water and steam systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal for residential and commercial installations, the Caleffi 59756 Discal Air Vent ensures reliable venting in tight spaces while maintaining efficient boiler, radiator, and hydronic performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070790878,"sku":"114958","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380920_c096b0ef-48bb-48d5-bf79-acc01d826872.jpg?v=1765814005"},{"product_id":"caleffi-253044","title":"Caleffi 253044","description":"\u003cdiv\u003e\n\u003cp\u003eCaleffi 253044 is a safety relief valve designed to protect systems from overpressure. Factory set to 60 Psi, Caleffi 253044 delivers reliable, immediate relief when pressure rises beyond safe limits, helping prevent damage, equipment failure, and unnecessary downtime. This trusted component from Caleffi combines precise engineering with straightforward operation, making it a dependable choice for installers seeking long-term protection.\u003c\/p\u003e \u003cp\u003eDesigned for straightforward installation, the valve delivers consistent performance with a focus on safe operation across common applications. Its compact body and precise factory setting support long-term protection against system overpressure, reducing risk of damage and downtime.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eBrand \/ Model\u003c\/b\u003e: Caleffi 253044\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eType\u003c\/b\u003e: Safety relief valve\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSet Point\u003c\/b\u003e: Factory set to 60 Psi\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eReliability\u003c\/b\u003e: Consistent overpressure protection\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eUsage\u003c\/b\u003e: Suitable for protection of pressure systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Caleffi 253044, you receive a clearly defined pressure relief mechanism that is straightforward to inspect and verify. The factory-set 60 Psi opening threshold provides predictable protection, helping maintain system safety across a wide range of installations.\u003c\/p\u003e \u003cp\u003eChoose Caleffi 253044 for reliable safety relief and peace of mind.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605070954718,"sku":"115253","price":55.94,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380926_8cd6a8e1-5863-49ae-85e5-d9cf79e44aac.jpg?v=1765814595"},{"product_id":"caleffi-502640","title":"Caleffi 502640","description":"\u003cdiv\u003e\n\u003cp\u003eCaleffi 502640 is a precision 1\/2\" air vent designed specifically for Hydrolink Series systems. This compact vent provides reliable automatic air removal, helping prevent air pockets that can degrade performance in hydronic heating and cooling setups. The 1\/2\" connection ensures an easy, secure fit in standard Hydrolink installations, delivering consistent venting where it matters most.\u003c\/p\u003e \u003cp\u003eWith durable materials and a compact profile, the Caleffi 502640 combines long-term reliability with simple maintenance. It’s ideal for new builds and retrofit projects that demand efficient air elimination without sacrificing space or flow. Use this vent to improve system efficiency, reduce noise, and extend the life of pumps and radiators.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePrimary use:\u003c\/b\u003e automatic air vent designed for Hydrolink Series only\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSize:\u003c\/b\u003e 1\/2\" NPT connection for broad compatibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFunction:\u003c\/b\u003e removes trapped air to optimize circulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDurability:\u003c\/b\u003e robust construction resistant to corrosion\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInstallation:\u003c\/b\u003e simple inline integration with Hydrolink components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605071282398,"sku":"128394","price":17.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380934_cdbdb1ac-1994-4432-98ea-df499306574b.jpg?v=1765809267"},{"product_id":"caleffi-132552a","title":"Caleffi 132552A","description":"\u003cdiv\u003e\n\u003cp\u003eThe Manual Balancing Valve With Flowmeter for the Caleffi 132552A delivers precise control for hydronic systems. With 3\/4\" NPT connections and a built-in flowmeter, it supports a selectable 2 to 7 GPM range for accurate balancing and steady system performance. This hard-wearing valve is designed to simplify commissioning, reduce pressure loss, and ensure consistent temperatures across zones. Engineered by Caleffi to meet strict industrial standards, it integrates smoothly with radiators, coils, and radiant floor circuits, helping technicians optimize energy use and comfort in both new builds and retrofits. The robust valve body and flowmeter assembly resist corrosion and wear, providing reliable operation over years of service in residential, commercial, and light industrial applications.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e3\/4\" NPT inlet\/outlet connections for versatile installation\u003c\/li\u003e \u003cli\u003eBuilt-in flowmeter provides immediate flow readings\u003c\/li\u003e \u003cli\u003eAdjustable 2–7 GPM flow range for precise balance\u003c\/li\u003e \u003cli\u003eDurable construction for long service life in demanding environments\u003c\/li\u003e \u003cli\u003eCaleffi 132552A model for reliable hydronic performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605071347934,"sku":"187204","price":201.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380922_3792ca96-a91d-4de9-9db8-c77c5cf05d3b.jpg?v=1765821084"},{"product_id":"caleffi-132662a","title":"Caleffi 132662A","description":"\u003cdiv\u003e\n\u003cp\u003eThe Manual Balancing Valve With Flowmeter delivers precise flow control for hydronic systems. With built-in flowmeter, this Caleffi 132662A ensures accurate readings for reliable balancing in 1\" NPT installations and 3 to 10 GPM ranges.\u003c\/p\u003e \u003cp\u003eEngineered by Caleffi, the 132662A balances flow in radiant heating, cooling and hydronic systems with durable brass body and corrosion-resistant internals. The unit's 1\" NPT ports are designed for straightforward retrofit and are compatible with standard piping. The 3 to 10 GPM flow range covers most residential and light commercial applications. Its simple external dial, calibrated for quick adjustments, makes balancing fast and repeatable across zones.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003e1\" NPT connection\u003c\/b\u003e for quick, secure installation\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e3–10 GPM flow range\u003c\/b\u003e fits most residential and light commercial systems\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBuilt-in flowmeter\u003c\/b\u003e provides immediate, accurate readings\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDurable brass body\u003c\/b\u003e with corrosion-resistant internals for long life\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIdeal for\u003c\/b\u003e HVAC, radiant heating, and hydronic balancing\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal for HVAC retrofits and radiant floor heating, this valve helps improve energy efficiency, controller performance and comfort with precise, repeatable flow control.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605071413470,"sku":"187205","price":234.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380923_5990051c-2e73-42eb-afac-72e8f2ff03bc.jpg?v=1765821086"},{"product_id":"caleffi-501502a","title":"Caleffi 501502A","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eCaleffi 501502A\u003c\/b\u003e is an extra hi capacity air vent with a 3\/4\" NPT connection, designed for NA548 \u0026amp; NA549 Series hydronic systems. This high-capacity vent efficiently releases trapped air, helping prevent air locks and maintain steady system pressure and performance.\u003c\/p\u003e \u003cp\u003ePerfect for larger heating zones and high-flow circuits, the \u003cb\u003eCaleffi 501502A\u003c\/b\u003e helps prevent air pockets that can reduce efficiency. Its rugged construction and compatibility with NA548 \u0026amp; NA549 components ensure dependable venting through seasonal swings in temperature and pressure. Designed for reliability, the vent's robust materials resist typical heating system wear, delivering consistent performance across seasons.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e3\/4\" NPT connection for straightforward installation\u003c\/li\u003e\n\u003cli\u003eExtra-high capacity venting designed for large systems\u003c\/li\u003e\n\u003cli\u003eReduces air pockets to maintain steady flow and heat transfer\u003c\/li\u003e\n\u003cli\u003eCompatible with NA548 \u0026amp; NA549 Series components\u003c\/li\u003e\n\u003cli\u003eDurable, corrosion-resistant body for long service life\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePerfect for retrofit projects or new installations, this vent integrates seamlessly with existing NA548 \u0026amp; NA549 lines, helping keep systems primed and efficient.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605071446238,"sku":"114839","price":250.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380927_149baad6-8d25-464d-9f4e-04d13a54132f.jpg?v=1765813716"},{"product_id":"caleffi-502043a","title":"Caleffi 502043A","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eCaleffi 502043A\u003c\/b\u003e is a 1\/2\" NPT male high capacity air vent Minical designed for fast, reliable air elimination in hydronic heating and cooling systems. This compact unit features a precision orifice and robust seals to ensure quiet operation and consistent performance even under fluctuating pressure.\u003c\/p\u003e \u003cp\u003eThis Minical air vent provides automatic air release, helping prevent airlocks, reduce pump cavitation, and improve overall system efficiency. The durable brass body resists corrosion and accepts standard 1\/2\" NPT male connections for straightforward installation in existing loops.\u003c\/p\u003e \u003cp\u003eIdeal for boilers, radiant floor heating, fan coils, and other closed-loop hydronic networks, it maintains steady pressure and minimizes nuisance noises while maximizing heat transfer. Regular maintenance is simple and the vent is designed for long service life in demanding environments.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eHigh-capacity air venting for rapid air removal\u003c\/li\u003e\n\u003cli\u003e1\/2\" NPT male connection for easy installation\u003c\/li\u003e\n\u003cli\u003eDurable brass construction resists corrosion\u003c\/li\u003e\n\u003cli\u003eAutomatic air release reduces air pockets and cavitation\u003c\/li\u003e\n\u003cli\u003eLow-maintenance design for long-lasting performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605071544542,"sku":"290864","price":18.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380929_3c900a7b-3bad-45bc-8f4f-c2f3109ee714.jpg?v=1765812265"},{"product_id":"caleffi-502343a","title":"Caleffi 502343A","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eCaleffi 502343A\u003c\/b\u003e is a high-capacity 1\/2\" NPT M air vent designed for the 548 Series, delivering reliable automatic air removal in HVAC systems.\u003c\/p\u003e\n\u003cp\u003eBuilt to endure demanding applications, this air vent helps prevent air pockets, improves heat transfer, and supports efficient system operation across hydronic heating, radiant flooring, and cooling setups.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e1\/2-in NPT M connection for easy installation and secure mounting\u003c\/li\u003e \u003cli\u003eHigh-capacity venting for rapid air release and improved heat transfer\u003c\/li\u003e \u003cli\u003eCompatible with \u003cb\u003eCaleffi 548 Series\u003c\/b\u003e components for seamless integration\u003c\/li\u003e \u003cli\u003eDurable, corrosion-resistant materials ensure long service life\u003c\/li\u003e \u003cli\u003eCompact, maintenance-friendly design for quick servicing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIdeal for residential and commercial hydronic systems, the 502343A combines robust construction with reliable performance to keep your equipment running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Metropac","offers":[{"title":"Default Title","offer_id":47605071610078,"sku":"114841","price":38.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/files\/00380931_5ab49bd9-cea5-4363-bb09-7cf128c3ab77.jpg?v=1765813721"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0034\/7102\/collections\/00380988_5b9f8942-6832-4c35-b7a0-a994e54adff0.jpg?v=1765765668","url":"https:\/\/newenglandsupplyhouse.com\/collections\/caleffi-hvac-parts.oembed","provider":"New England Supply House","version":"1.0","type":"link"}