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    alaronowitz's Avatar
    alaronowitz Posts: 3, Reputation: 1
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    #1

    Jul 6, 2013, 01:37 PM
    Increase Water Pressure Regulator
    With all the water turned off, the water pressure meter measures 140psi. When I turn on one faucet, the meter drops to 40 psi. Do I have a problem?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #2

    Jul 7, 2013, 06:19 AM
    140 PS I is over three times the average house average of 45 PSI. Too much pressure can damagefittings and valves. How old is your house and what material are the pipes? Do you have a pressure reducing valve installed where the water enters the house? Answer me back and I'll get right back to you. Regards, Tom
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    alaronowitz Posts: 3, Reputation: 1
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    #3

    Jul 8, 2013, 07:50 AM
    Quote Originally Posted by speedball1 View Post
    140 PS I is over three times the average house average of 45 PSI. Too much pressure can damagefittings and valves. How old is your house and what material are the pipes? Do you have a pressure reducing valve installed where the water enters the house? Answer me back and I'll get right back to you. Regards, Tom
    There is a PRV in the mechanical room before the water enters the house copper pipe system. The house and its plumbing are 17 years old.
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    speedball1 Posts: 29,301, Reputation: 1939
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    #4

    Jul 8, 2013, 08:55 AM
    Is a rating of 140 PSI taken before the PRV valve or after it enters the house? Back to you, Tom
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    alaronowitz Posts: 3, Reputation: 1
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    #5

    Jul 8, 2013, 10:14 AM
    Quote Originally Posted by speedball1 View Post
    Is a rating of 140 PSI taken before the PRV valve or after it enters the house? Back to you, Tom
    140 PSI is taken after the PRV valve on a faucet after it enters the house
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    speedball1 Posts: 29,301, Reputation: 1939
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    #6

    Jul 8, 2013, 10:41 AM
    The mystery deepens! You lose 100 PSI in your house pressure when you open a cold water faucet? And this is throughout the entire house? Is sounds like something is constricting the flow in your pipes. When the hundred and 40 PSI hits the blockage it restricts the volume and when the volume is restricted the PSI falls off. If the entire house is affected then the restriction has to be close to the entry point. Have you any thoughts on this? Regards, Tom
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