(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 3 of 3

Thread: Water Meter Couplings

  1. #1

    Default Water Meter Couplings

    Is it normal to have 3/4" galvanized main supply line, to 1/2" brass water meter coupling, to 5/8" water meter, to 1/2" brass mater meter coupling, to 3/4" galvanized supply line?

    Why is it reduced down to the 1/2" couplings?
    Are there 3/4" coupling that I should use?

    Thanks,
    Jason

  2. #2
    In the Trades Gary Swart's Avatar
    Join Date
    Sep 2004
    Location
    Yakima WA
    Posts
    7,246

    Default

    it's not uncommon to have a supply line larger than the meter, but I see no point in the 1/2" portion. The larger supply line is to cut down on friction loss. I would be concerned about the galvanized supply line. It surely is quite old as galvanized pipe has not been used for many years.

  3. #3
    In the Trades Bob NH's Avatar
    Join Date
    Oct 2005
    Location
    New Hampshire
    Posts
    3,307

    Default

    Quote Originally Posted by JasonG
    Is it normal to have 3/4" galvanized main supply line, to 1/2" brass water meter coupling, to 5/8" water meter, to 1/2" brass mater meter coupling, to 3/4" galvanized supply line?

    Why is it reduced down to the 1/2" couplings?
    Are there 3/4" coupling that I should use?

    Thanks,
    Jason
    You got 1/2" couplings because someone wanted to save $2 when they installed the meter. The couplings are usually the responsibility of the utility that installs the meter.

    The couplings may be what they got when they bought a bunch of meters from the lowest bidder.

    The change in size going in and out of the meter will cause more pressure loss at high flows. The proper way to do it would be to install a 3/4" coupling on the pipe, and a 3/4" meter coupling on the meter, but it may not be worth it if you aren't having pressure problems.

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
  •