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Old 01-15-2017, 03:15 PM   #1
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Threaded hose bib_not tight but won't go another turn


Have a 1/2" FIP hose bib threaded onto 1/2" copper male adapter - coming through brick wall.
I've found if using teflon tape, when the faucet is pointed downward, it's not quite tight enough. Pulling on hoses actually loosened the bib.

I'm guessing if moderate pulling on a water hose caused it to back off, it needs at least another 1/4 turn tighter. Even if possible, that'd point the outlet sideways.

It won't tighten another full turn - for sure. Even backing up the 1/2" copper w/ a large wrench, it'll probably deform something or strip threads - if I forced it another full turn (unlikely I could). A situation where tightening it so it's pointed correctly isn't tight enough.

Last bib I put on this same place (20 yrs ago) - used pipe dope - probably Rectorseal. Once the dope dries, it holds joints like this pretty well. Getting it back off if I use pipe dope - yrs from now is my main concern.

Any other suggestions? Unless I change the connection to sweat fittings, I don't know if anything other than pipe dope will keep the bib from turning. I need to keep a brass 'Y' shut off on this bib, giving even more leverage to accidentally loosen the bib.

I could try thinner teflon tape & a bare minimum of wraps. Maybe that would fill voids enough to stop leaks, but leave some metal to metal contact, for more friction? It's a long shot.
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Old 01-15-2017, 03:39 PM   #2
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Re: Threaded hose bib_not tight but won't go another turn


There's no flange on it with two holes for screws?
Are you in a location that get's below freezing?
I use pipe tape and dope for a better seal.
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Old 01-15-2017, 04:10 PM   #3
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Re: Threaded hose bib_not tight but won't go another turn


If you can pull on a threaded connection and disconnect it and it will not tighten 1 more turn there is something wrong with one of the components threads and it's probably the new one from china.
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Old 01-15-2017, 06:11 PM   #4
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Re: Threaded hose bib_not tight but won't go another turn


Teflon tape and pipe dope are not sealers. They are lubricants. If you can loosen the hose bib by pulling on the hose it is not nearly tight enough. Coat the threads well with pipe dope and reinstall the hose bib. Because of the pipe dope, it will not only screw on easier, it will screw on further. Put one wrench on the adapter and another on the hose bib and tighten. You can make that full turn you need.
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Old 01-15-2017, 08:15 PM   #5
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Re: Threaded hose bib_not tight but won't go another turn


Quote:
Originally Posted by hkstroud View Post
Teflon tape and pipe dope are not sealers. They are lubricants. If you can loosen the hose bib by pulling on the hose it is not nearly tight enough. Coat the threads well with pipe dope and reinstall the hose bib. Because of the pipe dope, it will not only screw on easier, it will screw on further. Put one wrench on the adapter and another on the hose bib and tighten. You can make that full turn you need.
Both teflon tape and pipe dope are sealants. here are leaks from the manufacturer that says they are.

http://www.oatey.com/products/thread...lants/pro-dope

https://www.menards.com/main/home-de...4447040622.htm
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Old 01-16-2017, 12:19 PM   #6
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Re: Threaded hose bib_not tight but won't go another turn


I'd remove the bib, back off 1/2 a turn, and reinstall.

In other words, if you started screwing it on with the handle on top, try turning it over so the handle is down and screw it on.
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Old 01-16-2017, 01:54 PM   #7
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Re: Threaded hose bib_not tight but won't go another turn


Pipe threads are a single thread. There is no starting a half turn sooner. It will still screw on in the same place.
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Old 01-16-2017, 05:38 PM   #8
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Re: Threaded hose bib_not tight but won't go another turn


Try another wrap or two of tape and report back.
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