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Discuss Is it possible to use jg speedfit pipe and fitting, to replace small section of copper? in the Fittings & Pipes area at UKPlumbersForums.co.uk.

  1. falable

    falable New Member

    hi, so we had tried to fit an isolation valve into copper pipe that came close from the mains supply, but i'm not proud of it. we had to leave the mains water valve at half pressure or else the fittings would leak/pop off.
    It was my first attempt at plumbing and i assumed i could easily move the pipe into the fittings, however the pipes didn't budge and so couldn't properly secure the fittings.

    I looked into pex piping and thought it would be possible to use speedfit pipe and fittings, because the pipe is flexible. (i mentioned john guest because it doesnt need crimper tools)

    I thought i'd ask you guys for advice, before i do something that might not work. Sorry if it looks like a mess
    IMG_20190522_172848.jpg IMG_20190522_172859.jpg
     
  2. Best

    Best Trusted Plumber

    Stop before you make more mistakes!
    Those valves have ptfe tape on threads which is pointless.
    Also noticed the valve is not parallel onto the pipe???
    You can get slip fittings, or remove more of the pipe to fit valves.
    Another last resort way is to use 2 elbows to make a ‘U’ shaped pipe for valve etc
     
    • Like Like x 1
  3. falable

    falable New Member

    i just want to join the pipe together and dont need valves, could you explain what slip fittings are? sorry i'm a newbie
     
  4. Best

    Best Trusted Plumber

    Slip fittings have no ‘stop’ part in middle of them, so can be pushed onto one pipe and pulled back over another pipe end.
    But you don’t need that. Just ordinary connectors needed, brass compression, or soldered or plastic.

    In your job it would be probably best to cut and remove a larger section of pipe and replace it with a new piece full size.
    You need to unclip the pipe so to allow a little movement out or upwards on both sides to be able to use the final connector.
    Only requires about 20mm of a gap to allow the connector to be able to line up with the pipe
     
  5. falable

    falable New Member

    okay, i'll follow your advice.
    when you say cut a larger section of pipe, roughly what length? the red line or blue line, or longer? IMG_20190522_172848_LI.jpg also should i use a straight coupler on one end and the slip coupler for the other end?
     
  6. Best

    Best Trusted Plumber

    Because you are doing away with the isolator valve, your pipe will be too short of meeting, so you need to replace a piece anyhow.
    You would need a piece longer than the blue line I would guess.
    You probably will not need a slip connector, but you could have them ready just in case.
    Just a connector onto each side will do if the pipe will lift enough.
    Personally I would unclip the pipe and see what movement it has. The more you lift the pipes (that are to a tight together length) the more the gap will widen.
    Just be fairly gentle with the pipes so not to disturb other joints or kink pipes.
    When out of the clips, the pipes should lift up or outwards 150mm no bother I would hazard a guess at
     
  7. falable

    falable New Member

    how much of a gap should i leave between sections, for coupling?
     
  8. Best

    Best Trusted Plumber

    None! The pipes need to be a tight fit.
    The gap I refer to is what you need to enable the final connector to go to edge of pipe by lifting both pipe ends up to make a gap.
    Best you get a plumber to do it for you.
     
    • Useful Useful x 1
  9. Millsy 82

    Millsy 82 Plumber GSR Top Contributor!!

    Cut the pipe CLEAN THE PIPE pop the top off the clips get 2 more couplers and some paste not ptfe. Slide nut and olive over with a bit of gentle movements slowly pull pipe forward and inch slide fitting in then push back into clips tighten up fittings Bob's your uncle all sorted
     
    • Like Like x 1
    • Useful Useful x 1
  10. falable

    falable New Member

    great advice, thanks
     
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