Pressure Issues

Discussion in 'General Discussion' started by Rodney, Jul 30, 2019.

Help Support Plumbing Forums by donating:

  1. Jul 30, 2019 #1

    Rodney

    Rodney

    Rodney

    New Member

    Joined:
    Jul 30, 2019
    Messages:
    1
    Likes Received:
    0
    Location:
    Atlanta
    I'm having pressure issues. I have good pressure 70psi or so when only one source is on. However when a second source is turned on then the pressure drops. Is this a pressure regulator issue or something else?
     
  2. Sep 5, 2019 #2

    Diehard

    Diehard

    Diehard

    Well-Known Member

    Joined:
    Aug 19, 2017
    Messages:
    2,019
    Likes Received:
    346
    Location:
    North Reading, Mass.
    I see this question is slightly over a month old but in case it's a still valid question, I offer this.

    It very well could be the pressure regulator(PRV) but it could also be a restriction somewhere in the line. It is normal to lose pressure when you flow water somewhere in the system. However, the amount you pressure you lose is based on the total flows together vs. the pipe size it must pass through. If the pipe sizes are adequate you typically would NOT lose a large amount. However, a restriction in the pipe system supplying the combined flows could cause a substantial amount of pressure drop when the flow rate goes up.
    You could check the pressure changes at different locations while flowing different amounts. For example check pressure variations before PRV, as well as just after the PRV. This would tell you if the loss in pressure was the result of a restriction in your service and whether the PRV was causing the large pressure loss.
    It's also possible to be further downstream in you piping system.
     
    Last edited: Sep 7, 2019
    breplum likes this.

Share This Page