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Leaking shutoff valve

oldcastiron
oldcastiron Member Posts: 16
edited October 2023 in THE MAIN WALL
The shutoff valve that controls the cold water supply for my DHW is leaking at the packing. Would appreciate any ideas for fixing this. I can solder and cut pipe, but not sure where I should cut. Not much space to put a bucket for catching water under the cold water pipe.

Is it worth switching to a ball valve or should I repair the packing?

Thanks!






Comments

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,401
    edited October 2023


    You should not need to turn it very much... Maybe 1/4 turn is all you should need. Don't over do it, because it looks old and you do not want to crack the nut. Then you will need to call a plumber for the larger leak you create

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    Intplm.
  • mattmia2
    mattmia2 Member Posts: 10,955
    Just clean up the stem with some scotchbrite if it is crusty and put a little string packing in it.
  • mattmia2
    mattmia2 Member Posts: 10,955
    I can't tell if that is a gate valve or globe valve. If it is a globe valve it is fairly restrictive and might be worth replacing. You'd drain the tank until the water was below the valve then replace it.
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,401
    edited October 2023
    mattmia2 said:

    I can't tell if that is a gate valve or globe valve. If it is a globe valve it is fairly restrictive and might be worth replacing. You'd drain the tank until the water was below the valve then replace it.

    It is a stop and waste valve @mattmia2 like this one

    https://www.supplyhouse.com/Matco-Norca-202C04LF-3-4-Solder-Ends-Stop-Waste-Valve-Lead-Free

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • mattmia2
    mattmia2 Member Posts: 10,955
    EdTheHeaterMan said:

    mattmia2 said:

    I can't tell if that is a gate valve or globe valve. If it is a globe valve it is fairly restrictive and might be worth replacing. You'd drain the tank until the water was below the valve then replace it.

    It is a stop and waste valve @mattmia2 like this one

    https://www.supplyhouse.com/Matco-Norca-202C04LF-3-4-Solder-Ends-Stop-Waste-Valve-Lead-Free
    That doesn't answer if it is globe or gate. I think it is globe especially since the waste is where a gate would seal off. Oddly the supplyhouse.com listing doesn't mention if it is a globe or gate valve or show a picture of the end either. Both globe and gate valve are available with waste.
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,401
    edited October 2023
    It is not a Gate Valve. I thought that everyone knows that a Stop and waste valve is a type of globe valve. And I'm not even a plumber

    And regardless of the Gate or Globe ...the fix is the same on both. Tighten the packing nut

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    Intplm.
  • mattmia2
    mattmia2 Member Posts: 10,955
    It is purely by convention that one would know it is a globe valve., You can get sink stops with ball valves.
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,495
    It's a globe valve.

    @oldcastiron

    shut the water off on the street side of the valve. Take the valve handle off and clean up the valve stem Loosen the packing nut and take some string packing or Teflon tape twisted into a string and wrap some around the stem. A little silicone grease on the threads. Then snug it up and turn the water on and check for leaks. If it drips snug it a little more.
  • ChrisJ
    ChrisJ Member Posts: 16,317
    Gate would've never crossed my mind looking at that.
    I like Ed's and @EBEBRATT-Ed 's advice.

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,401
    @EBEBRATT-Ed has good advise for a valve that is opened and closed on a regular basis.
    But the fast fix is to tighten the packing nut for now. You can get to the more involved maintenance when you have more time

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • WMno57
    WMno57 Member Posts: 1,408
    This has worked for me:
    1. Clean deposits off stem with small wire brush
    2. LOOSEN packing nut
    3. Barely tighten packing nut
    4. Turn stem in and out
    5. Tighten packing nut until dripping stops (or before if you are about to strip the threads)
    Sometimes this will repack the existing packing. Sometimes the packing will have to be replaced. Sometimes the entire guts of the valve should be replaced.

    Step 2 is important for success.

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