Amtrol 110 Hydronic Expansion Tank

Amtrol 110 Hydronic Expansion Tank ensures reliable pressure control in closed, non-potable hydronic heating systems. The in-line design blends a urethane top coated steel body with a heavy-duty Butyl/EPDM diaphragm for long-lasting performance.

Rated for up to 240°F and 100 PSIG, this tank measures 11 in. diameter by 16 in. high and holds 4.4 gallons. It arrives factory pre-charged at 12 PSIG and uses 1/2 in. male thread inlet/outlet connections. Lead-free construction, along with IAPMO R&T and ISO 9001 compliance, makes it suitable for modern, code-driven installations. Includes projection welded air valve, automatic air vent, and air purger to keep the system air-free.

• In-line design for easy installation
• Heavy-duty diaphragm (Butyl/EPDM) for durability
• Factory pre-charged air at 12 PSIG for quick setup
• 4.4 gallon capacity with 11" x 16" dimensions
• 1/2" male thread inlet/outlet connections for standard piping
• Lead-free construction; IAPMO R&T and ISO 9001 compliant
• Includes projection welded air valve, automatic air vent, and air purger
• 5-year tank warranty