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    Jay9755's Avatar
    Jay9755 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 25, 2006, 11:06 AM
    Failed HomeWater Pressure Reducing Valve
    I think that the PRV for my home water supply is not working properly. I have the pressure adjustment set to the lowest pressure (range 75 to 25). I have loosened the adjustment bolt all the way until I can turn it with my fingers. When I check the pressure at washer supply line both hot and cold the pressure reads in excess of 100 psi. When I leave a faucet running the pressure reduces to 30 psi. Are these signs that I need to replace my PRV? Thanks
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Oct 25, 2006, 03:24 PM
    Hi Jay,

    Are you sure it's the PRVs fault? Is your house a older one with galvanized pipes? This has all the classic symptoms of a volume restriction problem.
    100 PSI is over twice the average house pressure of 45 PSI. 100 PSI is putting a strain on your faucets and the joints in your house piping. My bet's on the house piping and not the PRV. Good luck, Tom
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