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Thread: Multi-port Valve Question - Losing Water

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    Multi-port Valve Question - Losing Water

    Should there be sitting water in the crevice on top near the handle? We recently had a pool company come out and replace the multi-port valve and booster pump and have since been losing water. I can only imagine the valve top isn't seated correctly onto the gasket or there is a defect in its construction. We are sitting some sitting water on top though and wondered if that was normal.

    Beyond that, I can only assume there might be leaks in the return lines since we hadn't ran a booster pump in some time. The water loss seems to only really occur with the pump on, so I imagine one of these two is the culprit.

    Appreciate it.
    17,000 Gallon In Ground Plaster -- Installed around 2001
    DE Filter - 1.5 HP Challenger Pump - Polaris 380

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    Re: Multi-port Valve Question - Losing Water

    Can you see it leaking?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad JVTrain's Avatar
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    Re: Multi-port Valve Question - Losing Water

    Is the water just sitting on top of the valve or dripping down the sides as well. I wouldn't imagine just a small amount of sitting water (very small leak) on the valve would cause a noticeable water loss. It's more likely related to the booster pump or the lines associated with it. Please be more specific and investigate some more.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Re: Multi-port Valve Question - Losing Water

    No, I don't see it leaking anymore than just the water sitting on the top of the valve. I guess I could clear it up with a towel and run the pump to see if it refills. I just didn't know if it was normal to have water sitting in the grooves if the valve was functioning properly.

    I don't believe this is where the water loss is coming from, I'm just wondering if it is a symptom that the valve itself is leaking more inside the chambers.
    17,000 Gallon In Ground Plaster -- Installed around 2001
    DE Filter - 1.5 HP Challenger Pump - Polaris 380

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