cpvc movement

Discussion in 'General Plumbing Help' started by sox2010, Aug 27, 2010.

Help Support Plumbing Forums by donating:

  1. Aug 27, 2010 #1

    sox2010

    sox2010

    sox2010

    New Member

    Joined:
    Aug 27, 2010
    Messages:
    3
    Likes Received:
    0
    Location:
    CT,
    hello all, I'm new to the forum.

    Have a question for some of the pros out there. My house was built in 2007. I recently was in my basement and noticed that one of the longer cpvc runs (about 30 ft) has moved about 1.5 inch from when it was originally installed. I noticed this because the installers marked where the hanger originally was on the pipe (see pic 1866 - the pencil mark in the original, the black mark is me recently).

    My concern is not so much with the movement, but where other pipes meet this pipe. Instead of a nice 90 degree angle, the adjoining pipes are being bent by the 1.5 - 2 in (see pics 1865 and 1864).

    One other point, this is only on the hot water line while the pipe is cold. It expands by and inch or so when the pipe heats (which I understand is normal for cpvc). The installers did allow for expansion at the end of the run (pic 1864).

    Should I be concerned about the bending in the adjoining pipes or is the cpvc flexible enough to absorb the bending?

    any thoughts would be appreciated

    IMG_1864.jpg

    IMG_1865.jpg

    IMG_1866.jpg
     
  2. Aug 27, 2010 #2

    sox2010

    sox2010

    sox2010

    New Member

    Joined:
    Aug 27, 2010
    Messages:
    3
    Likes Received:
    0
    Location:
    CT,
    One other point, when the pipe heats and expands, it expands the same way the pipe moved. In other words, the pipes in the pic are cold. When it heats up, it bends the pipes further.

    and just noticed the pic numbers do not show when posted.

    bottom pic shows the original marking and my current marking (pic 1866)

    top pic shows the end of the run (pic 1865)

    middle pic shows one of the adjoining pipes (pic 1864)
     
    Last edited: Aug 28, 2010
  3. Aug 28, 2010 #3

    phishfood

    phishfood

    phishfood

    Moderator Staff Member Professional Supporting Member

    Joined:
    Jan 18, 2010
    Messages:
    5,745
    Likes Received:
    986
    Location:
    Orlando, FL
    The only thing that I might worry about at all is the hot pipe in the middle picture. That pipe isn't bent all THAT far, and there is a decent distance before the pipe is held by the clamp on the metal bracket. But if you want a little peace of mind, you could loosen the clamp on the metal bracket, slide the pipe to the left, and retighten the clamp.

    All in all, from what I can see, that is good install. I have seen MUCH worse.
     
  4. Aug 28, 2010 #4

    Mr_David

    Mr_David

    Mr_David

    Easily Amused Professional

    Joined:
    Jan 12, 2010
    Messages:
    4,171
    Likes Received:
    1,058
    Location:
    Santee,Ca,
    I agree. Or just rip it all out and replace it with copper
     
  5. Aug 28, 2010 #5

    sox2010

    sox2010

    sox2010

    New Member

    Joined:
    Aug 27, 2010
    Messages:
    3
    Likes Received:
    0
    Location:
    CT,
    I ended up sliding the entire metal bracket back about a foot (basically the same things you guys suggested). it looks a little straighter.

    Would you guys be worried at all about how the pipe has moved since installation (bottom pic)? keep in mind this pic was not taken when the pipe was cold, so the movement is not related to hot water expansion

    about copper, wish i could, but water (very acidic), not to mention cost make it next to impossible
     

Share This Page