$100 · AMTROL ST-5 Thermal Expansion Tank

*Inline thermal expansion tank *Accepts expanded water caused by thermal expansion *Returns water to the system when hot water is used *Prevents dripping faucets, intermittent toilet fill and pressure relief valve discharge *Protects water heater, appliances and fixtures *Accepts expanded water caused by thermal expansion *Returns water to the system when hot water is used Prevents the relief valve from going off ‎Dimensions: 20.32 x 20.32 x 33.02 cm; 2.09 Kilograms