McDonnell & Miller 469 Boiler Low Water Cut-Off

McDonnell & Miller 469 Boiler Low Water Cut-Off ensures reliable boiler protection for steam and hot water systems. This float-type, mechanical-actuation low-water cutoff helps prevent dangerous low-water conditions by automatically shutting the boiler off when water levels fall below the safe threshold. Built for both residential and commercial use, it combines rugged construction with precise sensing to reduce downtime and maintenance.

Key specifications support durable performance in demanding environments, including a 2-1/2 inch female threaded port, a 9-1/2 inch overall length, and a packless bellows design for long life. It operates with 120/240 VAC input, providing a full-load current of 7.4 A at 120 V and 3.7 A at 240 V, and is rated for 20 PSI steam. This unit handles steam and water media and meets safety standards for reliable operation.

• Float-type, mechanical actuation for fast, reliable shut-off
• Packless bellows design for increased durability and longevity
• Port connection: 2-1/2 inch female threaded; insertion length: 1-3/16 inch
• Overall length: 9-1/2 inch; media handled: steam and water
• Current rating: 7.4 A at 120 V; 3.7 A at 240 V (full load)
• Input supply: 120/240 V AC; 125 V Amp; pressure rating: 20 PSI (steam)
• Applications: residential and commercial boiler protection; UL, CSA, FM approved