Main gate valve stem broken in open

Discussion in 'General Plumbing Help' started by Bushwaka, Aug 20, 2019.

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  1. Aug 20, 2019 #1

    Bushwaka

    Bushwaka

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    14B07356-5D44-4532-96EB-282FD2E72E3C.jpeg I’m new to copper pipe plumbing. Need some guidance for the replacement of the main gate valve.

    If I cut out the pipe and replace with new valve and pipe, should I solder the threaded portion of the pipe where it meets the valve?

    Can I replace with a ball valve instead of a gate valve? I’m guessing it’s code otherwise there would be more ball valves installed.

    What is the white coating on the pipe?

    Why would there be PVC fittings near the base of the pipe?
     
  2. Aug 21, 2019 #2

    Diehard

    Diehard

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    New to copper pipe plumbing? do you know how to solder?

    I assume it's the valve in the vertical, which appears to be a soldered valve. Not threaded.
    Do you know how you will fit the new pieces together, assuming it's fixed on each end?

    Yes a full port ball valve would be a good choice.

    Isn't the white coating just paint?

    They must have used PVC under ground.

    Is that 1" horiz. line, with the threaded gate valve, feeding a sprinkler system? If it is, it should have a
    Pressure vacuum breaker backflow prevention assembly (PVB), I believe.
     
  3. Aug 21, 2019 #3

    Bushwaka

    Bushwaka

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    Yes it’s the vertical valve. Solder all my electrical connections. Heat from the bottom, solder from the top. Was thinking of using copper sleeves for connectors?
     
  4. Aug 21, 2019 #4

    Diehard

    Diehard

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    Yes, you can use a copper sleeve(or a repair or slip coupling), which has no internal pipe stops as a coupling would.
    Well glad to hear you seem to have your act together. Good luck.

    EDIT: Do you have to get the water purveyor to shut off your water supply or can you do that yourself?

    For future reference, the 2016 California Plumbing code is available on line.
    Here are 2 different sites I found. I assume they contain the same info but haven't doubled checked that. I just like the ease of viewing one over the other.
    http://epubs.iapmo.org/2016/CPC/#p=1
    https://up.codes/viewer/california/ca-plumbing-code-2016

    Lead free solder and flux, of course.
     
    Last edited: Aug 21, 2019
  5. Aug 21, 2019 #5

    Bushwaka

    Bushwaka

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    I have access to the city water main. It’s at the curb line.

    Thanks for your help and confirming my plan.
     
  6. Aug 22, 2019 #6

    Rickyman

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    You should practice soldering in your garage before taking on an 1 1/4” ball valve job. Start with 1/2” and work your way up to 1 1/4”
     
  7. Aug 22, 2019 #7

    Diehard

    Diehard

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    Good idea!
    And watch a couple of good videos.:D
     
    Last edited: Aug 22, 2019
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  8. Aug 22, 2019 #8

    Bushwaka

    Bushwaka

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    that’s a great idea. Thanks.
     
  9. Aug 22, 2019 #9

    breplum

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    I recommend only using Mapp gas for soldering assemblies that big.
    We hardly ever solder any more. ProPress is the way to go.
    Wish you were closer, I have a few of solder type 1-1/4" lever handle ball valves left that I will likely never use.
     
  10. Aug 23, 2019 #10

    PlumbGate

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    That valve is rebuildable if you want the easy solution. Just get the same one and take parts from one to the other.
     
  11. Aug 29, 2019 #11

    Bushwaka

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    Rebuild is a much better option. Thanks for the suggestion.
     
  12. Aug 29, 2019 #12

    Diehard

    Diehard

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    You never mentioned why you wanted to replace it.
    Is it not holding tight?
    Or is it leaking at the stem?
    If it's not holding water flow through the pipe tight, make sure it doesn't have severe pitting or corrosion on the body seats.
     
  13. Aug 29, 2019 #13

    PlumbGate

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    It's in the title of the thread.
     
  14. Aug 29, 2019 #14

    frodo

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    Main gate valve stem broken in open

    it is just a guess but i think the title of the thread holds a clue as to what the original problem may be, not being a college educated person i could be mistaken,

    he he he .....g afternoon Diehard, how is you and every body ?else?
     
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  15. Aug 29, 2019 #15

    Diehard

    Diehard

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    I did see that title way back but I forgot about it. Old age!
    Not college educated. School of Hard Knocks.
    School.jpg

    Yup broken stem...very common on gate valves.
     
  16. Aug 29, 2019 #16

    frodo

    frodo

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    silfloss the stem to the bonnet and call it a day
     
  17. Aug 30, 2019 #17

    Diehard

    Diehard

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    This old guy is lost again.
    Or is this a joke?
     
  18. Aug 30, 2019 #18

    frodo

    frodo

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    not a joke at all, this can be the difference between water or no water awaiting parts
    for a quick temp fix
    silfloss the stem to the bonnet, remove the gate, screw the bonnet back on the valve body

    gate.png
     
  19. Aug 30, 2019 #19

    Diehard

    Diehard

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    Now you're talking.
    Thanks for the further info.
     

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