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Thread: Blue Flexible Discharge Hose - Alternative

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    Blue Flexible Discharge Hose - Alternative

    We had an 20x40 in-ground liner pool installed this spring. The pool builder left a thin blue hose for us to backwash or filter to waste if needed. We have a 1.5 horse Pentair pump. The discharge line is 1.5 inches. We have a DE filter and I haven't had to backwash yet, but we have had a couple heavy rains where I needed to get rid of some water. The blue hose seems to not be able to handle the pressure. It blows up like a balloon and last night It burst at a seam. I need to work out the kinks so when I do need to backwash I don't have the hose burst and DE end up all over my pool decking. Anyhow, I am trying to come up with another viable solution. I need to get the water 100ft away from the pool to an area that slopes away from everything. To clarify I have 2 50ft 1.5 inch sections of the thin blue hose that I have spliced together to form a 100ft length. Here is what I am considering.

    1. Run a rigid 1.5 inch PVC run which will be able to handle the pressure better. Or Flex PVC... Seems like the best alternative, but expensive.
    2. Run a Polyethylene line.(Sprinkler pipe rated at 100 psi). Cheapest option.
    3. Do I need a 2 inch blue hose and my problems will be gone. My pool builder said this probably won’t help long term.

    Any comments on what you all are using or how you have made longer runs work.


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    UnderWaterVanya's Avatar
    Join Date
    Jun 2012
    Mint Hill, NC

    Re: Blue Flexible Discharge Hose - Alternative

    If your discharge line is 1.5" you can probably use a 2" just fine. I have a 2" discharge hose on a 1.5" pvc pipe using a pipe clamp.

    You can buy 100' hoses I am pretty sure. Not splicing them would be better.

    Carefully stretch out the hose and always fold it or roll it back up each time you use it to avoid kinking it in a way that could jam up the water.
    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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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Blue Flexible Discharge Hose - Alternative

    I'd either hard pipe it or use the Polyethylene line.

    Mine is hard piped with 1½" and 3" line about 100'. I ran 1½" over to a 3" gutter drain and wye'd it in and it runs about 100' down hill.
    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
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Blue Flexible Discharge Hose - Alternative

    This is what i used and it's only 11.00 for 24ft, comes with 2 barbed adapters and a hose clamp. I glued on a female 1 1/2" threaded adapter onto my discarge line.

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