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Expansion Tanks absorb hot water expansion in closed heating systems. They are equipped with butyl diaphragms to separate the air from the system water. Pre-pressurized, the tank keeps fluids circulating and maintains minimum pressure.
2.0 gal Heating Expansion Tanks
Heating Expansion Tank 4.4 gal
Heating Expansion Tanks 7.6 gal
14.0 gallon Heating Expansion Tanks