All Elbows

Discussion in 'Shower & Bathtub Forum & Blog' started by Amatuer123, Mar 10, 2006.

  1. Amatuer123

    Amatuer123 New Member

    Messages:
    22
    Hello, I am installing a shower fixture and I’m trying to ensure I do it properly. Below is a picture. I need to bring the fixture out a bit to accommodate a change in the shower base dimensions. There are galvanized supply pipes coming from the ceiling. I’m attaching a dielectric union and then two or three 90 degree street elbows, a small copper piece and then a male adapter which attaches to the fixture. I’m applying wood glue… :eek: solder of course. My concerns are too many twist and turns. I guess I can just take the second street elbow out and make it a horizontal piece. I’m also unsure if soldering street elbows is adequate as they seem to have a looser connection as compared to say a street elbow connected to a regular piece of copper pipe. Any advice is greatly appreciated.

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  2. RioHyde

    RioHyde Plumber

    Messages:
    339
    Location:
    Cincinnati, Ohio
    That will work out fine. The way I'd do it however would be to cut a piece of copper the correct length for the drop, turn a 90 onto a street 45 (or 45 if need be) then cut a piece of copper for the horizontal between the 45 and the male adapter. This will eliminate one 90 and replace another with a 45.

    The one thing I would be concerned about would be access to the dielectric unions. If these are going to be in a wall you'll need some way of getting to them to service in the future.

    There is no problem with soldering street fittings. It is done thousands of times a day without incident.
  3. Amatuer123

    Amatuer123 New Member

    Messages:
    22
    RioHyde, thanks a bunch! I'm learning you can be a little creative w/ this stuff which is great. I'll probably make an access panel on the wall behind the fixture. Why would the dielectric union need to be serviced? Threading weakness, etc.?
  4. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,831
    Location:
    Cave Creek, Arizona
    access

    PRobably never, but it does have a rubber gasket that could deteriorate, and even though it is a "dielectric" union, it could still fail, or rust, because of electrolysis. They are more decorative than functional.
  5. RioHyde

    RioHyde Plumber

    Messages:
    339
    Location:
    Cincinnati, Ohio
    HJ,

    EXACTLY! I have a few members on my crew who swear by dielectic unions. However I've had to replace far too many of them due to corrosion/rust to have any faith at all that they'll last forever.
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