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Thread: How to test a pressure gauge?

  1. Back To Top    #1

    Join Date
    Jun 2008

    How to test a pressure gauge?

    I believe that my current sand filter pressure gauge is not showing the correct pressure. I am considering purchasing a new pressure gauge. However, how can you determine if a pressure gauge is working correctly? While it is not critical for a gauge to be exact if it does not measure pressure within industry standards I would like to return it for a better gauge. The pressure on my sand filter increases slowly. Pool stores are not receptive to accepting a return after six months. How can you increase the pressure to determine if the gauge shows an increase the first day?

    I am not experiencing any water balancing problems. I cannot determine when to backwash; the gauge has increased from 22 to 23 over 6 weeks.
    30,000 gallon gunite in-ground with a spillover spa, Diving board and water slide
    Hayward 1 HP Super II filter pump, Hayward 24 " Sand Filter Pro Series using zeolite media
    Polaris 380 cleaner with ¾ HP booster pump, Hayward Heatmaster pool heater, AutoPilot DIG-220 Power Supply SC-60 cell
    Testing with the TF-100 Test Kit

  2. Back To Top    #2

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: How to test a pressure gauge?

    Hi, Steve,

    They're about 6-8 bucks so the path of least resistance is simply to buy another. If it shows the same psi, store it'll need it sooner or later.....they typically don't last too long.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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