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    Mike1956's Avatar
    Mike1956 Posts: 3, Reputation: 3
    New Member
    		  
    #1

    Feb 17, 2011, 02:33 PM
    Is my water pressure regulator bad ?
    My static water pressure is high (140psi). When the water flows, the regulator can be adjusted (20 - 50 psi). When the water stops flowing, the pressure slowly builds back to 140 psi. IS THE REGULATOR BAD? (Watts 25 AUB). I am measuring at the CW laundry connection.
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #2

    Feb 17, 2011, 03:49 PM

    Sounds like a defective pressure reducing valve to me. Some regulators have a port for cleaning, some do not. May have debris preventing the valve from closing completely.
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #3

    Feb 17, 2011, 03:54 PM

    HI Mike...

    It certainly seems so, huh? ;)

    It could be that the regulator valve is slowly leaking by and these are super cheap/easy to replace overall so that would probably be the first place I would start.

    With that being said, do you have a lawn sprinkler system with a check valve... could be closing the system off and not allowing for expansion in the hot water system?

    How about a water softener or a whole house filter in the home... either could be plugged and allowing pressure to build.

    Also, look for an expansion tank at the water heater... could be defective.

    Thoughts..

    Mark
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