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Old 09-14-2016, 07:20 PM   #1
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Leaking valve


I recently rerouted some plumbing and added a ball valve. One side of the valve is sharkbite and the other is threaded. The sharkbite side is fine but the threaded side has a drip that I can't seem to stop. I did put tape on the threads first and even removed the valve and redid the tape with the same results. I tightened it with a Paris or adjustable pliers as much as I could and today I put an 18" pipe wrench on it and spun it again and it's actually dripping faster now. Do I have a faulty valve or am I somehow doing something wrong?
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Old 09-14-2016, 07:56 PM   #2
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Re: Leaking valve


It's possible you may have cracked the valve housing from over tightening or cross threaded it or something. Not very likely though. Unless you really went crazy with that 18 in. pipe wrench.

I would recheck your work first. Are you sure you are putting the tape on in the right direction so it pulls into the fitting threads and not push/back out? I like to use both tape and pipe dope.

Last edited by jmon; 09-14-2016 at 08:01 PM.
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Old 09-14-2016, 08:05 PM   #3
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Re: Leaking valve


I wrapped clockwise. Only went around once and I'm now thinking that could be the problem.
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Old 09-14-2016, 08:32 PM   #4
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Re: Leaking valve


I like to use at least 6 or 7 wraps and a little pipe dope on top of that. Just try the tape again with more wraps, that should do it.
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Old 09-14-2016, 09:12 PM   #5
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Re: Leaking valve


It's probably as Jmon says.... but if the make-up was to a male hand/machine threaded pipe, those can become uncalibrated/worn die and won't make a seal.

Running black gas pipe, I've had that happen on some BBox cut thread.
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Old 09-14-2016, 11:23 PM   #6
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Re: Leaking valve


The way I see it: As more manufacturers around the globe capitalize on the industrial market the worse the non conforming threading problem will become. At one time 4 wraps of tape was plenty and eventually it make 2 rolls.
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Old 09-15-2016, 06:24 AM   #7
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Re: Leaking valve


Should i suck it up and just spend another $20 on a valve with sharkbite on both sides?
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Old 09-15-2016, 07:09 AM   #8
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Re: Leaking valve


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Originally Posted by nikeman View Post
Should i suck it up and just spend another $20 on a valve with sharkbite on both sides?
Thats up to you. They are pricey. I would try more tape first, see if that works. If not, clean it up good, return it and get the other one as you mentioned. Just a suggestion.
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Old 09-15-2016, 10:07 AM   #9
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Re: Leaking valve


I will try more tape to see what happens. If it still leaks I'll need to buy the dumb little removal tool for the sharkbite and return the valve to home Depot. If I have to do all that I'll gladly cut that threaded pvc adaptor off the main line! Lol
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Old 09-15-2016, 10:10 AM   #10
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Re: Leaking valve


If you want to save a trip for the SB release "tool"..... use some channel locks set to just surround the pipe (not pinching) and then push in the plastic release ring.
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Old 09-15-2016, 10:16 AM   #11
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Re: Leaking valve


Check that P V C adaptor for a faulty threading.

You did not mention an adaptor before, or I think that the others would have caught that it was probably messed up.


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Old 09-15-2016, 11:00 AM   #12
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Re: Leaking valve


If it is female screw thread PVC adaptor return it. They should be illegal to manufacturer. It is either cracked or is going to crack, just like concrete does.
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Old 09-15-2016, 11:06 AM   #13
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Re: Leaking valve


It's a male thread pvc adaptor. I know not to use female threaded adaptors and didn't like the idea of pvc threaded anything but it's all they had the attach the valve to the existing pvc water line. Sharkbite side is attached to existing cpvc plumbing and is holding strong.
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Old 09-15-2016, 05:34 PM   #14
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Re: Leaking valve


I think I would remove what you have now including the leaking adapter. Get a IPS threaded ball valve, a male threaded PVC adapter, a male threaded CPVC adapter.
Coat the threads of both adapter with pipe dope. Screw the adapters into the valve and tighten.
Then glue the adapters to the piping.

I much prefer pipe dope to Teflon tape. Note that pipe dope and Teflon tape are not sealers, they are lubricants. You should not have any trouble tighten an adapter with a generous coating of pipe dope. In fact be careful not to over tighten.

Last edited by hkstroud; 09-15-2016 at 05:43 PM.
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Old 09-16-2016, 11:34 AM   #15
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Re: Leaking valve


I've had better luck using pipe dope over tape personally. T plus 2 thread sealant.
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