Question on how I've looped the PEX lines

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by ChasB, Jun 19, 2016.

  1. ChasB

    ChasB New Member

    Joined:
    May 11, 2016
    Location:
    Renton, Washington
    I've got my rough-in inspection for a bathroom on Tuesday. I'm wondering about how I've done the supply lines. I used rigid 3/4 pex to bring the water to the bathroom, then switched to 1/2 pex and did the loops you can see under the floor up to the sink and toilet. I read that loops or something similar should be used due to pex expansion but I'm wondering if what I have done here is overkill or unnecessary. I used 1/2 inch rigid pex up to the shower valve so no loops for those.

    http://imgur.com/ijhC6gx

    http://imgur.com/thxVcDH
     
  2. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    I would wonder if you would get dinged for not having enough supports.
     
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  4. ChasB

    ChasB New Member

    Joined:
    May 11, 2016
    Location:
    Renton, Washington
    Hard to see in the pic but I did clamp the loops to the boards on the wall. Might be more than 32 inches from those to the 90 degree bends, so I will check that, if that's what you're referring to. Actually I'm sure it's more than 32 for the sink lines. I can address that if I leave the loops.
     
  5. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    I was looking at the loops, plus the lines up to the shower stood out to me.
     
    ChasB likes this.
  6. ChasB

    ChasB New Member

    Joined:
    May 11, 2016
    Location:
    Renton, Washington
    Oh right, shower lines too. Thx!
     
  7. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    years ago a customer installed his own heating system using "loops" like those. When we redid the system we had a whole lot of extra copper tubing in our scrap bin. There is absolutely NO REASON for the loops. The inspector might laugh at the installation, but will probably pass it.
     
  8. ChasB

    ChasB New Member

    Joined:
    May 11, 2016
    Location:
    Renton, Washington
    We'll see I guess. He's coming over within the next couple hours so too late to mess with it now! ;-)
    Thanks for the post. Maybe I'll ask him if I can remove them.
     
  9. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    They are NOT a code issue so you can do anything you want to with them.
     
    ChasB likes this.
  10. ChasB

    ChasB New Member

    Joined:
    May 11, 2016
    Location:
    Renton, Washington
    He said the loops were not necessary, but he failed me for how I did the horizontal wet vent for the toilet, so I've got work to do. Hopefully be ready for another shot next week. Thanks all for the comments.
     
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