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Amtrol 141N43 - ST-12 Therm-X-Trol Thermal Expansion Tank, 4.4 Gallons - 141N43.
Amtrol ST-12 (Therm-X-Trol) is a water heater expansion tank, designed for use in domestic hot water heating systems to eliminate the potential hazards of water expansion. Water heater expansion tank is commonly installed in a domestic hot water system that contains a backflow preventer, a check valve or a pressure reducing valve.Product Features:
- Eliminates the waste of energy and water, thus saving money.
- Protects the water heater and plumbing fixtures from premature failure.
- Reduces potential safety hazards associated with thermal expansion.
- Prevents a dangerous pressure build-up in the system.
- Prevents the relief valve from going off.
- Therm-X-Trol brand is the #1 choice of Professional Installers.
- SKU: ST-12
- Model: 141N43