Need Help Connecting Two Sections of Flexible PVC

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Rayzen, Jul 3, 2011.

  1. Rayzen

    Rayzen New Member

    Joined:
    Jul 18, 2010
    Location:
    Granite Falls, Washington
    I am running a long suction hose from the river to a pump, in order to get water for watering my lawns during the hot, dry summer. The problem is that I had to join/splice two sections of flexible PVC hose between the foot valve and the pump. Because it's on the suction side of the pump, I can't have any air leaks, of course. I have tried using just the normal method of connecting the two sections of hose with a plastic, barbed connector and then clamping it with the typical little silver hose clamps that have a small "worm" thread (don't know how else to describe it) that is tightened with a screwdriver. No go; it leaks water and sucks air, no matter how much I tighten those clamps. So, here's my question: is there another way to connect those two sections of flexible hose together, such as with an in-line connector that is cemented in place? Can you glue flexible PVC? I know you can cement rigid PVC, and have done that, elsewhere, but what about the normal flexible PVC hose? And if gluing them together isn't an option, does anyone have an idea that will work, giving me a nice, strong air-tight connection?
     
  2. LLigetfa

    LLigetfa DIYer, not in the trades

    Joined:
    Feb 6, 2011
    Occupation:
    Semi-Retired
    Location:
    NW Ontario, Canada
    Not sure what you mean by flexible PVC. Are you sure it's not black poly pipe? Are you using the right barb fitting to splice it? The barb should be so big that you need to heat up the poly pipe to get it on. Are you using two gear clamps on each side (4 total) and staggering the worm gear on opposite sides?
     
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  4. jimbo

    jimbo Plumber

    Joined:
    Aug 31, 2004
    Location:
    San Diego, CA
    If it is actually (white) flex. sch. 40 PVC, it is WAY too stiff to clamp. It glues like rigid pvc pipe. Prime well.
     
  5. LLigetfa

    LLigetfa DIYer, not in the trades

    Joined:
    Feb 6, 2011
    Occupation:
    Semi-Retired
    Location:
    NW Ontario, Canada
    I've never seen it around here. Does it come in long coils like poly?
     
  6. gritres

    gritres New Member

    Joined:
    Jun 7, 2011
    Location:
    nw florida
  7. LLigetfa

    LLigetfa DIYer, not in the trades

    Joined:
    Feb 6, 2011
    Occupation:
    Semi-Retired
    Location:
    NW Ontario, Canada
    I'll stick with poly.
     
  8. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    He already has the PVC, and if it is sch. 40, it will glue to a coupling, as long as he uses cement/glue rated for flexible pipe, with primer.
     
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