Thermal Expansion Tanks

Easyflex’s thermal expansion tanks are available in 2 capacities, 2 and 4.5 gallons. They’re designed to maintain safe pressures in a domestic water heating system that utilizes a backflow preventer or check valve. Each tank has a plastic liner that separates the system water from the tank’s air charge and a brass air charging port with an o-ring seal.

• Stainless Steel 3/4" MIP w/Hex
• Butyl Rubber Diaphragm
• NSF 61 Compliant
• Factory Pre-charged to 40 psig
• Protects Water Heater, Fixtures and Appliances
• Prevents Dangerous Pressure Build Up
• Stainless Steel Connector
• Provides a Reservoir for Expanded Water Volume

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