Should PEX spin?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by kokopup, Nov 13, 2004.

  1. kokopup

    kokopup New Member

    Messages:
    5
    We gutted house and had plumber put in all new plumbing (PEX pipe and all rough-ins). I'm installing fixtures now. I noticed that the PEX stub-outs from the wall "spin.," that is, they rotate when turned. There doesn't appear to be a leak at joint (as best as I can tell--it's covered by drywall), but should it spin like this? Makes me wonder if copper crimp rings were properly installed.
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,251
    Location:
    Cave Creek, Arizona
    spinning

    I do not use PEX, so I cannot tell you for certain, but given the way PEX fits onto the fittings, and the way a proper crimp should be made, I would doubt that it could be loose enough to spin. I will be interested to see what PEX installers say about it. I they say it is a common thing, then I guess my decision not to use PEX may have been the right one.
  3. TickMan

    TickMan New Member

    Messages:
    2
    Our new cabin was done with PEX, and I noticed that the sink valves rotated on the PEX. Our plumber said it was perfectly OK, and he's been doing PEX exclusively for some time.
  4. loFreqncy

    loFreqncy New Member

    Messages:
    6
    First off, I'm no pro (far from it).

    That said, I replaced all the supply pipe in my house with PEX(the galvanized was leaking and I could not afford a plumber). All the crimps I made checked out perfect with the gauge, and yes they "spin". I wondered about this too, but I've never seen a drop come out of them.
  5. patrick88

    patrick88 Plumber

    Messages:
    836
    Location:
    Webster Ma.
    Yes they will spin. All the pex fittings I have done can and will spin. It is much like well tubing. If you tighten the clamps down you can still spin the fittings. I would rather not have pex as a stub out. I would use copper sticking out the wall or some else less flimsy.
  6. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,316
    Location:
    New England
    There are some really robust stubouts for pex made of copper that allow you to install conventional compression shutoff valves without hassles, and those will be tight. You can use the same compression shutoff on pex, but you MUST use the (typically) stainless steel bushing inside of the pipe to give it something robust to compress onto. A compression shutoff installed in this manner can still be spun, but it will be hard.
  7. Redwood

    Redwood Master Plumber

    Messages:
    7,450
    Location:
    Connecticut
    PEX connectors will turn and it is normal.
  8. nhmaster

    nhmaster Master Plumber

    Messages:
    3,189
    Location:
    S. Maine
    Some spins more than others. I find Wirsbo / Uponor spins easier than Viega and ss rings. But yes it will and unless you see leakage it's OK.
    Last edited by a moderator: Oct 18, 2008
Similar Threads: Should spin
Forum Title Date
Plumbing Forum, Professional & DIY Advice Sink Defect (Kohler Pennington) - I Should Have Checked It First Nov 12, 2014
Plumbing Forum, Professional & DIY Advice How should I use this? Oct 2, 2014
Plumbing Forum, Professional & DIY Advice Grohe Slip fit tub spout not flush against wall - should I trim pipe or just silicone around base? Aug 16, 2014
Plumbing Forum, Professional & DIY Advice what should i do? wells and septic Aug 4, 2014
Plumbing Forum, Professional & DIY Advice What's this thing, and how should I fix. PRV Valve Jun 10, 2014

Share This Page