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  1. #1
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    Checking house water pressure

    I have a house with a leaking PRV. Seems like the pressure is too high. Usually, I can check the pressure at the outdoor hose bib. But this house the water coming into the house does not go through the PRV to the outdoor bib. Where is the best place to check the pressure so I can adjust it?

    I was thinking maybe the drain valve on the hot water heater. What do you think?
    Can someone please explain to me -
    Why is there never enough time to do it right the first time, but plenty of time to do it twice?


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  2. #2
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    Most houses in my area have one outdoor faucet that is before the pressure regulator... and another after it.

    If you do not have either of those... then yes, the drain of the water heater is an alternative place.

    Another thought, if you can fit your pressure gauge there... would be the hot/cold water supply for the laundry area... or use a small hose there.

    Water pressure over 50-60 PSI... is an accident waiting to happen...
    GA-HVAC-Tech

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  4. #3
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    Quote Originally Posted by joemach View Post
    I have a house with a leaking PRV. Seems like the pressure is too high. Usually, I can check the pressure at the outdoor hose bib. But this house the water coming into the house does not go through the PRV to the outdoor bib. Where is the best place to check the pressure so I can adjust it?

    I was thinking maybe the drain valve on the hot water heater. What do you think?
    First,... Replace/ Repair the PRV.

    Adjusting the PRV, while it's leaking, may/ may not be, accurate.

    Second, ... isn't there a "Pressure Tap" on the PRV?
    Hos 4:6 My people are destroyed for lack of knowledge. Because you have rejected knowledge, I will also reject you, that you may be no priest to me. Because you have forgotten your God’s law, I will also forget your children.


    "You've got to Stand for Something or You'll fall for anything" (A. Tippin)


    Mat_15:24 But he answered, “I wasn’t sent to anyone but the lost sheep of the house of Israel.”

  5. #4
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    I would check pressure on the water heater drain valve with a cold tank and watch the change in pressure as tank heats up. May need a expansion tank.
    UA Local 32

  6. #5
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    Thread Starter
    Quote Originally Posted by ga-hvac-tech View Post

    Another thought, if you can fit your pressure gauge there... would be the hot/cold water supply for the laundry area... or use a small hose there.

    Water pressure over 50-60 PSI... is an accident waiting to happen...
    Now why the heck did I not think of that?
    Can someone please explain to me -
    Why is there never enough time to do it right the first time, but plenty of time to do it twice?


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  7. #6
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    Thread Starter
    Quote Originally Posted by DavidDeBord View Post
    First,... Replace/ Repair the PRV.

    Adjusting the PRV, while it's leaking, may/ may not be, accurate.

    Second, ... isn't there a "Pressure Tap" on the PRV?
    No pressure tap on the PRV. Seems like everything I touch in this house breaks. Every hand valve I turn off and on ends up with a leaking packing nut. The PRV was not leaking until I turned the water off to do a repair and then back on.
    Can someone please explain to me -
    Why is there never enough time to do it right the first time, but plenty of time to do it twice?


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  8. #7
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    Thread Starter
    Quote Originally Posted by buford View Post
    I would check pressure on the water heater drain valve with a cold tank and watch the change in pressure as tank heats up. May need a expansion tank.
    Hot water tank has a good expansion tank.
    Can someone please explain to me -
    Why is there never enough time to do it right the first time, but plenty of time to do it twice?


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  9. #8
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    Quote Originally Posted by joemach View Post
    No pressure tap on the PRV. Seems like everything I touch in this house breaks. Every hand valve I turn off and on ends up with a leaking packing nut. The PRV was not leaking until I turned the water off to do a repair and then back on.
    Joe,

    You don't have a set up similar to one of these?:

    https://www.wattsindustries.com/imag...ions_Guide.pdf

    ---------

    I'd replace/ repair the POV, & if there aren't isolation valves before & after the POV, then install them. Then work your way downstream, & replace/repair what's leaking.

    But every POV I've sen had a "Tap"/ "Port" where a Gauge could be mounted to test the pressure.
    Hos 4:6 My people are destroyed for lack of knowledge. Because you have rejected knowledge, I will also reject you, that you may be no priest to me. Because you have forgotten your God’s law, I will also forget your children.


    "You've got to Stand for Something or You'll fall for anything" (A. Tippin)


    Mat_15:24 But he answered, “I wasn’t sent to anyone but the lost sheep of the house of Israel.”

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