Results 1 to 11 of 11
  1. #1
    Join Date
    May 2009
    Posts
    64

    Pipe connection question - gate valve steel pipe

    is it possible to attach a gate valve to a steel pipe (3 inch) without welding?

    being done on a hot water heating pipe

    trying to avoid use of a torch near wood wall.

    thanks

  2. #2
    Join Date
    Dec 2002
    Location
    in a house, Appomattox, Va.
    Posts
    3,197
    thread it and use a threaded valve. or flange and flange valve.

    or go back to nearest fitting on either side and repipe section in middle with pipe, union and valve
    Col 3:23


    questions asked, answers received, ignorance abated

  3. #3
    Join Date
    May 2009
    Posts
    64
    can a gate valve be attached to a coupler that has been afixed to a steel pipe with a victoulic groove?

  4. #4
    Join Date
    Mar 2003
    Posts
    7,316
    yes. they make a fitting that will attach to raw pipe, then get a short nipple raw to groove and a vic flange, done.

  5. #5
    Join Date
    Feb 2011
    Location
    Sacramento, CA
    Posts
    147
    Quote Originally Posted by zeppy View Post
    is it possible to attach a gate valve to a steel pipe (3 inch) without welding?

    being done on a hot water heating pipe

    trying to avoid use of a torch near wood wall.

    thanks
    Why a gate ? Why not a full port ball valve? More expensive, but a much better valve in my opinion.
    I have done so much with so little for so long, that now I can do almost anything with nothing at all.

  6. #6
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,044
    Quote Originally Posted by flange View Post
    they make a fitting that will attach to raw pipe .
    That fitting comes in handy, I just used 2 of them on 3" a couple months ago. Made the job a little easier.

  7. #7
    Join Date
    Mar 2003
    Posts
    7,316
    remembered the name, roust a bout coupling by victualic

  8. #8
    Join Date
    Dec 2010
    Location
    georgia
    Posts
    78
    Quote Originally Posted by flange View Post
    remembered the name, roust a bout coupling by victualic
    Yes this is a great product.

  9. #9
    Join Date
    Oct 2011
    Location
    Mesa Az
    Posts
    28
    Agreed , have used many. You dont want to weld with a torch anyway.

  10. #10
    Join Date
    May 2009
    Posts
    64
    the valve is being used to valve off an extension of pipe that will never be used again.

    pipe being sealed off is a vertical extension that needs to be empty indefinately.

    so the seal on the pipe is very important. quality of seal from a gate valve is better than a ball valve

    ideally, a cap should be used on the coupling to simplify work and ensure a much better seal.

    a ball valve in the closed position may be inadvertently adjusted over time and then water would leak into a chamber that needs to be empty to avoid potential pipe freeze (a hose bib above valve is not being installed so it will be difficult to assess if any water has leaked into the empty pipe - poor design approach)

  11. #11
    Join Date
    Aug 2008
    Posts
    91
    They make die nut's that you can use a socket and rachett on so you can thread something in tight place's. Expansion plug's work good also, sometimes you have to use a reamer to get a good contact area.

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