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Thread: How important is a pump pressure gauge

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    TimS's Avatar
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    How important is a pump pressure gauge

    The gauge on my Sand Dollar doesn't rise above 18psi. The normal operating pressure on my clean filter (according to this obviously defective gauge) is 16psi, so at most my pressure gauge rises 2psi when the filter is dirty. I'm certain that the pressure does go above this, but the gauge is not registering it.

    The way the filter was installed, I can't see the gauge anyway without crawling under the deck. In order to correct this, I'd have to re-plumb the whole setup (PVC) to turn the filter head around, which I can do, but I don't know if it's worth the effort. Another option would be to re-plumb the gauge so that it is piped out around the side of the head instead of being directly mounted. (Note that I'm going to be doing a little bit of re-plumbing on this this winter to fix an issue with my backwash plumbing.)

    This summer, I based my filter cleaning on pressure at the return. When it felt like I'd had a significant drop in return pressure (and the current significantly decreased,) I knew it was time to clean the filter.

    Since I would have to re-plumb things, is it worthwhile to bother with a new gauge. Is it that important to know what the pressure really is?

    Is this a standard pressure gauge that I can get from someplace like Lowes? If not, any ideas where I'd find it? Specialty plumbing store?

    TIA
    24' AG Round (vinyl replaced 0909) - 13500 gal - Sand Dollar Filter (150lb) - Dynamo DYNII-N1-1 1HP - Hayward HP380 Heat Pump - TF-100.
    Central Missouri

    Before I speak, I have something important to say.

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    Re: How important is a pump pressure gauge

    They're important. Neighbor's filter basically exploded, after realizing he had an obstruction. He had a non-op pressure gauge, never removed it when closing.

    They're generic. You can get them at Lowes or HD, for under 10 bucks.
    Kansas City, MO
    13500 gallon Foxx vinyl sport pool--inground (1988)
    Cristal-Flo sand filter
    Ray-Pak 406A digital
    1.5 HP single speed
    400 gallon Heldor inground spa, octagon

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    Re: How important is a pump pressure gauge

    You can certainly run a pool/ filter system without a working pressure gauge As you said, you just need to watch the return action to know when to clean the filter

    You seem to know your pool well enough to do this However, the gauge screws in so can be turned to allow you to see it
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

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    TimS's Avatar
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    Re: How important is a pump pressure gauge

    Quote Originally Posted by waste
    However, the gauge screws in so can be turned to allow you to see it
    It's not that it is upside down, it's that the head is installed so that the gauge is on the back side where I can't see it (or the sight glass either) without crawling under the deck.

    In order get it where I can see it, I'll have to put two elbows and about 3"-4" of pipe in the line. Not being a plumber, I don't know how much that would drop the pressure to the gauge, and if it would be significant. How accurate does the gauge need to be anyway? Any idea?

    It would be fairly easy to do, if it's worth the effort.

    Since I can't see the sight glass either, when I backwash, I just go to the end of the hose and watch that until it's clear. Less convenient than watching it through the sight glass, but it works.
    24' AG Round (vinyl replaced 0909) - 13500 gal - Sand Dollar Filter (150lb) - Dynamo DYNII-N1-1 1HP - Hayward HP380 Heat Pump - TF-100.
    Central Missouri

    Before I speak, I have something important to say.

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    duraleigh's Avatar
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    Re: How important is a pump pressure gauge

    The 90's will have virtually no effect on the efficiency of your system......I think the guage is very important.

    Each time my pump goes on, I check the psi for normal operation. It's a great indicator of anything not functioning properly or assurance that everything is.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    TimS's Avatar
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    Re: How important is a pump pressure gauge

    Thanks. I picked up the parts last night (but naturally there are a couple that I missed so I have to go back again. [rant] Why on earth can't I ever get all the pieces I need on the FIRST trip? Even when I make a list! [/rant] Since it's pretty cheap and easy, (gauge was under $8, and pre-threaded brass fittings were under $8) I might as well fix it.
    24' AG Round (vinyl replaced 0909) - 13500 gal - Sand Dollar Filter (150lb) - Dynamo DYNII-N1-1 1HP - Hayward HP380 Heat Pump - TF-100.
    Central Missouri

    Before I speak, I have something important to say.

  7. Back To Top    #7

    Re: How important is a pump pressure gauge

    Hubby and I just bought a used pool and needed to replace the pressure gauge. Thanks for making it easy to find our answers... he'll be making a run to Lowe's before next spring to fix it.
    Indiana, ABG 24'x52" Galveston by Blue Cascade (Craigslist $600 w/part of deck included), 13,500 gallons, Intex SWG, solar panel

    My backyard is like a park... Why then does DH always want to go camping??? I just don't understand.

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