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What Is Thermal Expansion?
With modern plumbing codes mandating backflow prevention, thermal expansion can cause pressure buildup in domestic water systems. 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 shortened water heater life.
The WiseWater 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.
About the products:
WiseWater Thermal Expansion Tank with a replaceable membrane. This pump is ideal for every modern installation and can be applied to any type of pump. The real volume of the pressure vessel is much greater then normal tanks of the same dimension. A compressor is not necessary since an air cushion, separated from the water by the membrane, maintains a constant pressure in the tank. These tanks can also be provided with stainless steel flanges.
These tanks suitable for water booster system, pumps, potable water storage, domestic hot water systems.
Expansion Tank on Potable Water Home and Commercial application.
VolumeSize: 2.1 gal to 40 gal.
Color:Red
Material: Cast iron body with stainless steel flange
Function:
1· Protects the water heater and plumbing fixtures from premauture failure, eliminates the waste of energy and water, thus saving money.
2·Protects the water heater from thermal expansion, absorbs the increased volume of water created when water is heated, prevents a dangerous pressure build-up in the system.
3·The system connection has a stainless steel nipple to prevent corrosion, tanks are finished with appliance quality paint which helps prevent external corrosion.
4·Constructed of cast iron body, outside finished with quality paint, inside finished with anti corrosion film. Compared with steel material, it’s more durable and dependable.
Model Gallon）PressurePort SizeMax. Working NPT248 °F 5.5BQ-04-19L510Bar1/2" NPT248 °F 7.7BQ-04-24L6.310Bar1/2" NPT248 °F 9BQ-06-50L13.210Bar3/4" NPT248 °F 20BQ-06-80L21.110Bar3/4" NPT248 °F 33BQ-07-150L4010Bar3/4" NPT248 °F 57
