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Thread: Pentair Valve Gasket--any tips?

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    Join Date
    Jun 2007
    New Jersey

    Pentair Valve Gasket--any tips?

    I have the Pentair version of the Jandy Never-lube valves on my 2004 A&S pool. The diverter valve between the main drain and the skimmers that feeds the pump intake has developed a slow drip (when pump is off) and air leak (when pump is on.) The drip is coming from the joint between the top of the valve and the valve body. Bearing down on the screws is no help. There does not appear to be any crack in the valve body or cover.

    Has anyone had or seen this problem? Is the fix a simple gasket swap? Unfortunately, I'll have to drop the pool level by maybe two feet to service this thing, and I'd like to have all my ducks in a row. If I have to swap it, I'd lose three valves and a union and it would require cutting back three 2" risers almost to the ground. I am getting a fair amount of air and pH has been rising far more than I am used to (3 gallons MA so far, more than I would use in a normal season.)

    Thanks. I searched but got nothing relevant. This is my first thread start. I really can't understand why this thing would leak if there is no crack and the screws are tight.
    Current: 28,000G 18'x36' I/G AnthonySylvan Plaster; Waterway 60 sq.ft. DE Filter; 1.0hp x 1.65 SF Two-Speed (B2982) WhisperFlo; 2004-Present
    Previous: 40,000G 20'x40' I/G Koven unlined WWII salvage 5/8" marine steel; Lomart Stainless Sand Filter; 3/4hp Hayward SuperPump; 1946-2003 (managed by me from about 1964)
    Ancient Taylor K-2000, upgraded with Taylor CH, TA, and FAS-DPD, and TFT CYA tests.

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    In the Industry

    Join Date
    Jun 2010
    Dallas Tx

    Re: Pentair Valve Gasket--any tips?

    There is a gasket on that cap that may need servicing (clean and lubricate) or replacing if it is cracked/stretched. serving Dallas pools since 1953!

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

    Re: Pentair Valve Gasket--any tips?

    Since you're going to have to lower the water level and you don't want to do that any more than is absolutely necessary. I suggest installing a complete gasket kit for the valve. Be sure while you have it apart that you closely inspect for any cracks or damage. I'd also probably check around with some local pool stores and see if they have a replacement valve just in case it turns out you have to replace it once you tear into it.

    Post a pic of the plumbing where the valve is and maybe someone here can suggest a way to replace it without having to destroy the surrounding piping if it comes to that.
    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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