(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 5 of 5

Thread: Replace hot supply line

  1. #1
    DIY Junior Member n2learning's Avatar
    Join Date
    Mar 2009
    Location
    Missouri
    Posts
    21

    Default Replace hot supply line

    Gas WH currently has 1/2" hot supply line. Cold supply is 3/4".
    I want to replace 1/2" with 3/4".

    Can you add anything (or correct) the steps I need to take:

    1) shut off water from main or valve going to WH
    2) turn off gas going into WH
    3) empty hot water by turning on lowest fixture in home
    4) do I also need to drain the WH with a hose running to a floor drain?
    5) solder new copper pipe w/ 3/4"...and also add a heat trap.
    6) turn everything back on and check for leaks

  2. #2
    DIY Junior Member jc60618's Avatar
    Join Date
    Dec 2009
    Location
    Chicago
    Posts
    88

    Default

    I install a union fitting on both hot and cold lines. Also dont forget to use the proper transition between different metals. There are different methods do do this some examples are; dielectric unions, dielectric nipples, brass nipple or stainless steel nipple.

  3. #3
    DIY Junior Member n2learning's Avatar
    Join Date
    Mar 2009
    Location
    Missouri
    Posts
    21

    Default

    I think I will leave the unions alone, although they do look pretty corroded.

    Is there anyting else I should do other than replacing the female adapter from the nipple (shown in the image) and soldering new 3/4" pipe?


  4. #4
    DIY Junior Member jc60618's Avatar
    Join Date
    Dec 2009
    Location
    Chicago
    Posts
    88

    Default

    You should be ready to go. However I would first pre fab the female adapter into a small piece of pipe, let it cool and then install it. Also use teflon tape and pipe dope on the threads.

  5. #5
    DIY Junior Member n2learning's Avatar
    Join Date
    Mar 2009
    Location
    Missouri
    Posts
    21

    Default

    Good call. Thanks!

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •