What kind of pipe transition do I need?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by JamieThompson, Dec 23, 2011.

  1. JamieThompson

    JamieThompson New Member

    Messages:
    2
    Location:
    Virginia
    Apologies, but I couldn't think of a way to search for this. The gate valve in the pictured photo has gone bad and I need to replace it with another valve. I will probably use a ball valve and I know how to transition from the valve to the copper, but I can't tell a) what the black pipe is made of; and b) how to transition from it to the valve.

    I know that I could take it apart and see but don't want to dismantle it and run the risk that what I need has to be special ordered or is no longer available?

    Can anyone tell me what the black pipe is made of, and how to transition to the next piece? The only thing I can really see are the two hose clamps on the outside of the pipe.

    This is the water main pipe that comes in from the outside of my house. The gate valve that I am replacing is just before the water meter.

    val 2.jpg
  2. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    Looks like a hack job. The pipe is probably polyethylene, but hose clamps are not the proper connection. The fitting should be a barb fitting, with crimp clamp. Looks like a valve with a stub of copper soldered to it.
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,831
    Location:
    Cave Creek, Arizona
    Check with your water company. In many cases EVERYTHING ahead of the water meter belongs to them, and YOU are not supposed to do ANYTHING with it.
  4. JamieThompson

    JamieThompson New Member

    Messages:
    2
    Location:
    Virginia
    Thanks for the replies

    According to my water authority, they own the curb cutoff and the meter, and I own everything in between. So the inside cutoff is my responsibility.

    As to the barb, the big orange box sells two different styles: The more traditional barb: http://snipurl.com/21e0kmf and the "ridge" style: http://snipurl.com/21e0kv1. Any idea which would be better or preferable?

    Also, the other threads seem to say that for PE pipe, you just heat it up and slip the barb in. Do I need any pipe dope or sealant on the barb?
  5. dlarrivee

    dlarrivee New Member

    Messages:
    1,172
    Location:
    Canada
    Pipe dope is for threads.
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