Results 1 to 5 of 5

Thread: Hose-end fittings into flex ducting

  1. #1

    Hose-end fittings into flex ducting

    Does anyone know the trick of fitting 4" flanged hose-ends into spiral flex ducting? Maybe soften the end of the duct in boiling water or with a heat gun?

  2. #2
    Try a 4 inch no hub connector.
    Its in the plumbing section and looks like a large hose clamp with a rubber sleeve inside.
    It will allow you to tighten on to different diameters with in reason.

  3. #3
    I am using 5 inch metal in my current shop but my last one was 4 inch S&D PVC. I'm working from memory but I believe I got a nice tight fit of flex into the female end of the 4 inch PVC - the end where the other pipe can slide in.

    If you need to, PVC can be expanded or shrunk with a heat gun. The Oneida super dust deputy can be too.

  4. #4
    Join Date
    Dec 2010
    Location
    NW Arkansas
    Posts
    1,951
    Blog Entries
    1
    I used a 4inch HDPE pipe for my collector runs. The fittings from grizzly and others fit ok, but pipe was easily shrunk with heat gun to be tight fit. I did use a single wrap of duct tape to really make things airtight (inside) and if I thought it needed it, a quick wrap of aluminum ducting tape.
    Woodworking, Old Tools and Shooting
    Ray Fine RF-1390 Laser Ray Fine 20watt Fiber Laser
    SFX 50 Watt Fiber Laser
    PM2000, Delta BS, Delta sander, Powermatic 50 jointer,
    Powermatic 100-12 planer, Rockwell 15-126 radial drill press
    Rockwell 46-450 lathe, and 2 Walker Turner RA1100 radial saws
    Jet JWS18, bandsaw Carbide Create CNC, RIA 22TCM 1911s and others

  5. #5
    Join Date
    Feb 2014
    Location
    Lake Gaston, Henrico, NC
    Posts
    8,973
    These are probably sold somewhere else too, but I remember seeing them here:
    https://classicgutters.com/product-c...out-expanders/

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •