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  • Not sure what valve/compression fittings I need... [pics]

    First time poster, awesome forum :P

    I have a 25-30-year-old Quest shutoff valve under my sink that I need to replace. I was trying to isolate a faucet drip, and I turned off the hot water at the shutoff valve under the sink for the first time... Now it won't open back up fully. It still works, kind of, but it's ancient and should be replaced anyway.

    I know very little about plumming, but this would appear to be two compression fittings. I'm not sure what diameters I'm going for, though. Does this setup look familiar to anyone? I think all I need is two compression fittings, the shutoff valve, and a couple wrenches, or will cutting the pipe be necessary due to the old compression fittings possibly bending the pipe ends?

    Edit: Actually, since, as you can see, it's rigid pipe connecting to the valve on both sides--no flexible tube--will I not have the room to cut the pipe if necessary? How do I get around this? The pipe goes up and into the sink handle valve, and a braided supply line goes from the handle valve to the faucet. Would it be easiest to not use any of the current pipe connecting the shut-off valve to the handle and replace it with a flexible 18" braided tube?

    Edit yet again: I've just read I need to use Quest parts for these old Quest pipes. Will Home Depot have them, or should I just order what I need (once I figure out what I need )?

    The grey pipe that goes up to the copper that goes up to the handle valve is 3/8" OD, the copper coming out of the wall is 5/8". Would something like this work? http://plumbing.hardwarestore.com/52...ve-664979.aspx

    What fittings would I need? I read elsewhere that I have to use Quest compression fittings for grey Quest pipes...
    Attached Files
    Last edited by ralphus; 11-30-2010, 03:23 PM.

  • #2
    Re: Not sure what valve/compression fittings I need... [pics]

    If the 1/2" pipe going into the valve is gray polybutylene, then the
    easiest thing to do is replace the valve with an identical one.
    No special tools needed. Otherwise you will have to cut out the
    old valve and crimp an new fitting to the pipe, which requires a
    special tool or a plumber with the tool. If you can't find what you
    need then a service call might be needed. It shouldn't cost more than
    the minimum labor rate plus parts.

    Comment


    • #3
      Re: Not sure what valve/compression fittings I need... [pics]

      Thanks for the response. It is indeed gray PB that goes up and is coupled with a copper pipe that goes into the handle valve. Does Qest still make this stop valve? I haven't been able to find it pictured anywhere online to buy another.

      Comment


      • #4
        Re: Not sure what valve/compression fittings I need... [pics]

        Is copper coming up from the floor?

        Comment


        • #5
          Re: Not sure what valve/compression fittings I need... [pics]

          The pictures are oriented 90o off, but yeah, copper pipe is coming from the wall. It's the one with the insulating foam around it to cover up the hole in the walls.

          Comment


          • #6
            Re: Not sure what valve/compression fittings I need... [pics]

            Easy!Any old compression valve will do you just fine.

            Comment


            • #7
              Re: Not sure what valve/compression fittings I need... [pics]

              OH GAWD it's POLYBUTELYNE! the entire house needs to be torn down and rebuilt
              sigpic

              Comment


              • #8
                Re: Not sure what valve/compression fittings I need... [pics]

                Thanks Jay! Bought a typical compression angle stop and braided hose, hooked it all up and it's working great!

                *tears house down*

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