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Thread: Looking for post on replacing a main water shutoff under pressure

  1. #1
    DIY Senior Member SteveW's Avatar
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    Default Looking for post on replacing a main water shutoff under pressure

    In responding to another thread, I remembered a fairly recent post someone made about how they have had to replace a residential main water valve with the water running -

    I have searched and searched but can't find it.

    If memory serves, seems like Rugged or Cass may have been the poster.

    Can anyone help me find this?
    Thanks.

  2. #2
    In the Trades Gary Swart's Avatar
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    Why not have your city water department shut the water off on their side of the meter?

  3. #3
    Plumber patrick88's Avatar
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    It is not a good idea to try doing any type of plumbing with the pressure on. You could get hurt, or worse. The guys that might have done that are pro's and the circumstances could have warranted their actions.
    I'm just starting to work with an old friend of mine to bring solar electric and hot water systems, wind turbines, Flex Fuel Boilers, batteries, hydroponic gardening, books, pellet grills and more. Also the parts for DIY installation.

  4. #4
    Master Plumber Redwood's Avatar
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    It might have been a thread on another forum where they were replacing a curb stop under pressure and only got a little wet using this device.

    http://pollardwater.com/pages_product/P645aquastop.asp

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    Commercial Plumber markts30's Avatar
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    Might want to look into propress...
    If the line is hard copper ProPress would work...
    A little messy and all but do-able...

  6. #6
    Master Plumber Redwood's Avatar
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    I'd sharkbite it before i waited for a propress to crimp if I was getting a bath.

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    DIY Senior Member SteveW's Avatar
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    I'm a DIY homeowner so would never think about doing this myself, but it was, as I recall, a very interesting and amusing story by one of our professional plumbers -

    Just wanted to hear more about how this is done, for my own curiosity rather than for practical use myself...

  8. #8
    Plumber jimbo's Avatar
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    On copper pipe up to 2", the Jomar Add-a-Valve will get the job done:
    http://www.jomar.com/products/pdf/Fi...dd-A-Valve.pdf

  9. #9
    DIY Senior Member SteveW's Avatar
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    Quote Originally Posted by jimbo View Post
    On copper pipe up to 2", the Jomar Add-a-Valve will get the job done:
    http://www.jomar.com/products/pdf/Fi...dd-A-Valve.pdf
    I couldn't tell by the PDF document how it works - could you please describe?

  10. #10
    DIY Senior Member SteveW's Avatar
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    http://www.terrylove.com/forums/show...ght=gate+valve



    Here's the original thread I was looking for -

  11. #11
    Master Plumber master plumber mark's Avatar
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    Talking get some waders

    you need a pair of salmon waders if you are going to
    attempt that,

    and perhaps some sort of gloves to
    keep the frigid water from numming you hands while
    doing this procedure....

    you will probably look like a wet rat
    when it is all said and done...


    make sure all electrical wires are off the flor
    or unplugged from the wall

  12. #12

    Smile replacing water meter valve

    Its kind of ironic that this topic has come up,just last week had to change a meter valve under pressure for a bank owned foreclosure,the city required the change because the old 3/4" globe valve had taken a beating over the years,the stem was broken and you needed vise-grips to close the valve.The real kicker in this senario was that curb stop did not function,the water stayed on in the open and closed position,(now the cities problem)because it was an old 3/4" galv. water service the pressure was not that great, maybe 40 psi and the house was vacant with a basement,you do the math.Any way took out a 24"+18" alum RIDGID wrenches and backed out the old valve very care-fully with the valve opened slapped some dope all over the threads and put on a new 3/4" wog ball valve,the key is to have your new valve open when installing so the resistence created by the flow of water will not hinder you from starting on the thread.This was the second time in 25+years I had to make a change of the meter valve under pressure.

  13. #13
    Plumber jimbo's Avatar
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    Quote Originally Posted by SteveW View Post
    I couldn't tell by the PDF document how it works - could you please describe?

    It attaches to the pipe ahead of the valve you want to replace. It clamps to the pipe, and a bore is made into the pipe. Similar to how service lines are attached to the main under the street. It becomes a permanent installation, as of course you cannot remove it after the hole is made!!

  14. #14
    Retired Defense Industry Engineer jadnashua's Avatar
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    They have an installation video on their website for the Jomar device. Neat fixture, but it's NOT cheap. Under the right circumstances, I guess it could be. I just did a quick search, and a 3/4" one ran over $300. There are two versions - one for copper, the other for steel, cpvc (and maybe other materials).
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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