How to fix leaky water shut-off valve in tight space?


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Old 04-20-16, 12:35 PM
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How to fix leaky water shut-off valve in tight space?

See pictures. The valve is located behind the ceiling drywall panel of the basement. There is a litter bit of water leaks when the valve is open (when it is shut-off, then no leak). So, the washer may need to be replaced.

However, in order to fix this, I am facing the accessibility issue. The opening on the wall panel is only about 5.25 by 4.5 inch. I am not sure how to dis-assembly the value in such a tight space.

So, I am hoping to get some expert advice here. What should I do? Is there any special tool needed for this?

Any help is appreciated. Thanks,

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Old 04-20-16, 01:54 PM
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Replace the valve with a ball valve. If you have to open the wall & install a larger access door, do it.
 
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Old 04-20-16, 02:45 PM
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The packing nut just needs to be tightened...

[ATTACH=CONFIG]65315[/ATTACH]
 
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Old 04-20-16, 05:12 PM
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As Mike said. Tighten gland nut about 1/4 turn. If that does not stop the stem leak then another quarter turn. As you tighten it the handle will become harder to turn. If it does not work then new stem packing is needed. To keep the washers and stem packing from getting brittle and cracking you should turn all isolation valves all the way off, then all the way open then back off a 1/4 turn. Do this about every three months.
 
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Old 04-20-16, 06:19 PM
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thanks for these advice. However, I just found this product [Graphite Valve Stem Packing]. It seems easy to apply. do you think it will work in my situation?

Thanks,



[ATTACH=CONFIG]65324[/ATTACH]
 
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Old 04-20-16, 07:33 PM
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I just use teflon tape rolled into a string. I wrap clockwise around stem when packing nut is loosened...

The stuff you show is probably too thick..
 
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Old 04-20-16, 07:34 PM
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Yes, if you need it. Try the 1/4 turn of the gland nut first.
 
 

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