44 Gallon, PreCharged Water Worker Boiler Expansion Tank, For Closed Loop Hydronic Heating Systems Using Baseboards Or Radiators, A Heavy Duty Diaphragm Flexes Against An Air Cushion To Maintain A Safe Operating Pressure, 240 Degrees Fahrenheit Maximum Temperature, 100 PSI Maximum Working Pressure, PreCharged At 12 PSI, 12 NPTM
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