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Thread: Leak in PVC joint

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    meatloaf's Avatar
    Join Date
    Feb 2008
    Gilbert AZ

    Leak in PVC joint

    My 2" PVC pipe leading to the filter has developed a small leak in the pipe joint. It only leaks 2-3 ounces in a three hour period and only when the pump is on. What is the best way to seal the joint?
    My pool is a 10,500 gallon (420 Sq Ft ) kidney shape. STA-RITE HRPB30, Sand filter 30" 98 GPM, 1 HP Maxi-Glas 2 pump, BBB Method, Taylor K-2005 test kit, 50 Watt 12V low-voltage pond light illuminates the pool at night for a nice soft glow.

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Leak in PVC joint

    It is normally pretty impossible to "patch" a PVC joint. Generally, they need to be remade.

    Yours' sounds like it could get by to the end of the season or start of next, however.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Join Date
    Mar 2007

    Re: Leak in PVC joint

    Lowes / HD will have a rubber tape for wrapping around a water leak. If it is just a small drip leak this should fix it rather nicely. When you put the tape on be sure and stretch it as you apply it.
    27' Round AG, 17,200 gallons, sand filter

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    Join Date
    Jul 2007
    South Florida

    Re: Leak in PVC joint

    There are many 'patches' including the tape mentioned, epoxy, etc. Some people even try to glob more pvc cement over it. The fact is that PVC joints are not really 'glued', they are solvent 'welded'. The primer and glue soften the PVC and when dry 'weld' the PVC together. You should never try to apply new primer or PVC cement to the outside of a pipe. Epoxy or the tape *can* stop some leaks, but at best you should consider it a temporary fix, especially for pressurized systems. The only real fix is to cut out the leaking joint and put a new one in.
    Roughly 15x30 IG Gunite/Diamondbrite, 14,000 gallon
    Heliocol Solar 7(4x10) panels w/Aqua Solar controller, Intelliflo 4x160 pump, Hayward C1200 filter, Autopilot DIG-220 w/SC48 SWG, The Pool Cleaner sweep

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    Join Date
    Jan 2008

    Re: Leak in PVC joint

    If your joint is a difficult to reach area for easy replacement, then you can try the next best thing, patching.

    Cut a piece of pvc pipe 1" length and cut it into half round (you ended up with 2 "C" shaped pieces). Use one piece to patch like you would to a tire tube patch (like first aid plaster) on the pipe right next to the joint. This would sort of thicken the pipe to same level as the elbow or whatever joint. Put lots of solvent and hold the patch as close to the joint until cured. Then apply the other "C" shape piece as another patch right on top of the leak.

    Solvent by itself can seal any leaks but it cannot withold any pressure, but with this type of patch, it can withold certain pressure.
    8,000 gal IG concrete & tiled lap pool, 1/2 hp pump, 24" sand filter, SWG Auto Clean, whole pool under shed, 3 X 2ft waterfall one end overflow the other end. TF100 Testkit. 80 F Water whole year round.

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