Re: Pressure Relief valve on hot water heater leaks
Posted by Terry Love on August 17, 1999 at 18:36:18:
In response to Re: Pressure Relief valve on hot water heater leaks

: Hi,
: Our pressure relief valve on the gas hot water heater keeps opening up on a random basis. We replaced it with a new one, but it still opens. When it does, it will stay stuck in the open position. The gas heater is not set too hot. Since the vlave is new, what else can I do? I think it is rated at 212-F.

: Thanks,
: Glenn

Glenn,
While pressure relief valves may be set for 212 degrees and 150 PSI, it doesn't take much, if the system has some sort of check valve on it to obtain enough pressure to cause the relief valve to leak. The house pressure should be set at 80 PSI or lower. If not, a pressure reducer is in order. In a "closed" system, an expansion tank should be installed to allow for the expansion of heated water. Terry




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