Amtrol ST-12 Thermal Expansion Tank

Amtrol ST-12 Thermal Expansion Tank
- Eliminates the waste of energy and water, thus saving money
- Prevents the relief valve from going off
- Protects the water heater and plumbing fixtures from premauture failure
- Eliminates the waste of energy and water, thus saving money
- Prevents a dangerous pressure build-up in the system
Amtrol ST-12 THERM-X-TROL Expansion Tank, 4.4 Gallon (141N43) What Is Thermal Expansion? With modern plumbing codes mandating backflow prevention, thermal expansion can cause pressure buildup in domestic water systems. When demand is put upon a potable water system, hot water is drawn from the water heater. Cold water from the supply line enters the water heater to replenish it. The colder water is heated to replace the hot water used. With the installation of a backflow preventer, check valve or pressure reducing valve on the supply line, the water heater and the system piping form a closed plumbing system under pressure. As the water is heated, thermal expansion occurs. Pressure increases until the relief valve opens and the expanded water "spills" from the water heater. This "spillage" results in wasted BTU's and a potential safety hazard for the homeowner. Closed Potable Hot Water system without THERM-X-TROL Backflow preventer, pressure reducing valve or meter causes expanded (heated) water to build pressure causing the relief valve to open resulting in: Wasted BTU's Shortened water heater life Wasted municipal water and sewer dollars Potential safety hazard for homeowner The Amtrol THERM-X-TROL ST-12 Expansion Tank is designed to eliminate this problem by providing control of maximum pressures at a level below the relief valve setting. It also provides an additional space in the system to accommodate the increased volume of water created by thermal expansion, returning it to the system when hot water delivery is demanded.
Country USA
Brand Amtrol
Manufacturer AMTROL
Binding Tools & Home Improvement
ItemPartNumber ST-12
Model ST-12
Color White
Size one-size
UnitCount 1
UPCs 642031395672
EANs 0642031395672
ReleaseDate 0000-00-00

Country	USA
Brand	Amtrol
Manufacturer	AMTROL
Binding	Tools & Home Improvement
ItemPartNumber	ST-12
Model	ST-12
Color	White
Size	one-size
UnitCount	1
UPCs	642031395672
EANs	0642031395672
ReleaseDate	0000-00-00

Amtrol ST-12 Thermal Expansion Tank

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