AMTROL ST-5 Thermal Expansion Tank:
- Metal
- Made in USA
- Accepts expanded water caused by thermal expansion
- Returns water to the system when hot water is used
- Prevents the relief valve from going off
- Inline Amtrol ST-5 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
