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AMTROL 102-1#30 EX-30 30 Extrol Expansion Tank

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Amtrol Inc. designed and patented the first Extrol diaphragm expansion tank in 1954 to control system pressure and help reduce energy consumption in heating and chilled water systems. Over six decades later, Extrol is still the world's leading expansion Amtrol Inc. designed and patented the first Extrol diaphragm expansion tank in 1954 to control system pressure and help reduce energy consumption in heating and chilled water systems. Over six decades later, Extrol is still the world's leading expansion

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[This review was collected as part of a promotion.] Expansion tank accommodates water volume increase as water is heated. You know tank is bad when relief valve dumps water regularly.  If you have access tank is easy to replace. Turn off boiler and shut adjacent valves. When removing remember that tank is now filled with water and very heavy.