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Thread: Hard vs Flexible PVC

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    Join Date
    May 2012
    Danville, IN

    Hard vs Flexible PVC

    I did some searching, but really didn't find an answer to my question. I'm trying to find out how well flexible PVC really stands up over time. When closing my pool this year, I ended up cracking one of the fittings on my suction line from the main drain and skimmers in my IG pool. I'm going to have to redo the plumbing to the pump and probably from pump to filter. I'm considering using some form of flexible PVC for both suction and pump to filter lines, which would make lining things back up easier and isolate any pump vibrations. My concern of course is how reliable the flexible PVC is over time, because I don't want a rupture.

    Are there any recommendations whether to use solid over flexible PVC? Also, what type of flexible PVC is best to use and should it be clamped or glued?

    Also, I'd really like to do something with my discharge line. I have a 4" solid corrugated pipe nearby in which our downspouts used to drain. Any reason I couldn't run the discharge pipe into that drainage pipe? Thanks for your input!
    25K gal IG Vinyl Ell shaped pool, Pentair SuperFlo 1.5HP single speed pump,
    Pentair SandDollar sand filter (Zeobrite), Pentai Intellichlor IC40 Chlorine Generator

  2. Back To Top    #2
    dmanb2b's Avatar
    Join Date
    Apr 2009

    Re: Hard vs Flexible PVC

    Most builders prefer hard pipe...flex PVC is convenient ( I use it on my AGP) and can be used, but tends to break down quicker and is susceptible to termite damage
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

  3. Back To Top    #3
    UnderWaterVanya's Avatar
    Join Date
    Jun 2012
    Mint Hill, NC

    Re: Hard vs Flexible PVC

    This site has pretty good info - despite the obvious potential for bias they seem to track other people's caveats for using this product:
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

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