The Easyflex 4.5 gallon thermal expansion tank – the safe solution to compensating for thermal expansion in water heaters. As water heats up, it expands and can cause excessive pressure and damage to the plumbing system. The Easyflex tank is made of 16-gauge steel and butyl rubber diaphragm, ensuring durability and reliability. The tank is pre-charged at 40 psi for convenience and comes with a limited 6-year warranty.

Stainless Steel 3/4″ MIP w/Hex

NSF 61 Compliant

Protects Water Heater, Fixtures and Appliances

Prevents Dangerous Pressure Build Up

Provides a Reservoir for Expanded Water Volume