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    aachun63's Avatar
    aachun63 Posts: 1, Reputation: 1
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    #1

    Sep 25, 2016, 06:35 PM
    Correct psi for 21 gallon pressure tank
    What is the correct psi setting for a 21 gallon water pressure tank?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Sep 25, 2016, 08:21 PM
    Volume has nothing to do with it. Find where the cut on pressure of the pump is. Note that number. Now, turn the pump off, bleed the water pressure off. Add air so the bladder pressure is 2# below cut on pressure. Turn pump on.
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