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Thread: Help - Water Pressure in Return Lines low?

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    Help - Water Pressure in Return Lines low?

    I'm having a problem with what I think is water pressure in my return lines. I believe it to be a pressure problem because I have three returns, one in the deep end, one in the shallow end and one for a slide. The water has stopped flowing out of the slide. The water pressure in the deep and shallow end returns seems to be ok. Also, the pressure gauge on my cartridge filter housing is around 27 psi when it usually runs around 20. My pool is 6 years old , it is a 16x32 vinyl inground pool with a Sta-Rite Cartridge Filter and a Sta-Rite pump. I've had the pool open since early May with no issues until today when I noticed that water wasn't running down the slide. I cleaned the filter cartridge, the pump basket and the skimmer basket and restarted the pump, the intake valve to the pump was between drain and skimmer(half way) - water began to flow out of the slide but it wasn't flowing as vigorously as it usually does and it eventually stopped(I didn't notice how long because I didn't return for a couple of hours at which point I realized it wasn't running down the slide). After I noticed that the water had stopped flowing down the slide, I stopped the pump, opened the valve on the top of the cartridge housing and took the lid off of the pump to reintroduce some air into the system, then I closed everything up and restarted the pump - once it primed and all of the air was forced out of the system, a very small amount of water began to flow from the slide but stopped after a minute or two. I'm stumped. Thanks in advance for any suggestions/advice.

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Help - Water Pressure in Return Lines low?

    Welcome to TFP.

    What does yuor water look like?
    When you first cleaned the filter what did the pressure gauge read?
    When the pump is off does the gauge read zero?

    I suspect you have no flow because of the high filter pressure. What we need to figure out is what's causing the high filter pressure.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Help - Water Pressure in Return Lines low?

    Welcome to TFP!!!

    A higher than normal pressure on the filter certainly does seem to point to something off on the pressure side.

    I don't suppose there are any valves on the pressure side, like for the slide, that are more closed than usual? ... start with the obvious right.

    Can you post pictures of the setup?

    If the flow into the pool seems fine and it is just the slide that is not working sure seems like something is clogging the slide.

    I think Bama is more thinking your filter may be clogged, but you should then see a reduced flow in the pool as well.
    Jason, TFP Moderator
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