Soldered joint or thread on valve body?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by WorthFlorida, Jun 5, 2014.

  1. WorthFlorida

    WorthFlorida USCG escorting cruise ship leaving Port Everglades

    Messages:
    127
    Location:
    Lake Worth, Florida
    Hello all,

    I'm replacing a Price Pfister valve body (0x8-310A to a 0x8-340A) The new one has integrated valve stops. The replacement one has outside thread fittings with 1/2 inch inside fitting for soldering. The instructions do read that soldering is one way to connect the pipes after removing all plastic parts and cartridge. It's copper pipe all the way. My question for the pros is do you prefer to solder or use threaded female fittings to the valve body?

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  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,319
    Location:
    New England
    Solder it...cheaper, faster, more robust.
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,258
    Location:
    Cave Creek, Arizona
    Solder, no chance for a thread to leak.
  4. Sluggo

    Sluggo Member

    Messages:
    80
    Location:
    WA
    After you remove the internals, do the soldering with the valve body in a horizontal position to insure that you don't have any excess solder flow down internally where it might interfere, for example, with the service stops.
  5. WorthFlorida

    WorthFlorida USCG escorting cruise ship leaving Port Everglades

    Messages:
    127
    Location:
    Lake Worth, Florida
    I completed the replacement of the valve body but two things to know,

    1) After removing the plastic parts and the cartridge, I removed the valve stops. There are what looks like neoprene o-rings and the valve stems are tip with the same material. The instructions did not mention the valve stops. Heat would have definitely melted these parts.

    2) A propane torch does not generate enough heat for the heavy brass valve body. A quick trip to the store for a MAPP gas unit took care of the problem.
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