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Author: Radish Big gold star, 5000 posts Old School Fool Add to my Favorite Fools Ignore this person (you won't see their posts anymore) Number: of 128074  
Subject: Re: Calling all plumbers! Date: 10/24/2013 1:26 AM
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The illustration shows everything that came in the box.

Looks like a union to me. You should be able to put a pipe wrench on (3) and try tightening the nut (2) a little with another wrench. If that doesn't work, I can't think of anything you can do besides open the union up and try again.

Unions are very picky about alignment between the two mating parts (1) and (3). Even a small angle between the two is enough to make it leak no matter how tight you tighten the nut. It looks to me like, outside the photos, you have another union and the two are connected together by the valve body. That makes it extra tough, because the two pipes coming up have to be almost perfectly aligned. (If there was just one union, you could tweak things a bit to get them to line up. But with two, tweaking one will untweak the other usually.)

If that valve body will flex up even a little, you should be able to completely loosen the nut (2) and, if you can flex the pipe some, expose the mating surfaces of the union. See if they are clean and not gouged or otherwise damaged. You might have to open both unions up (to be able to raise the valve body a little).

That'd be an opportunity to remove the tape on the nut (2). Honestly, I doubt the tape is the source of the problem... but it's possible. Most likely, the two parts of the union aren't perfectly aligned or there's some damage on the mating surfaces.

Mis-alignment cannot usually be solved, in my experience, by just tightening the nut like crazy. If the union parts don't line up just right with the nut just hanging down on the pipe completely loose, they're not going to line up when you tighten the nut. Though it sure seems like they should... if you just tighten it a little more... maybe a bigger pipe wrench... maybe add a cheater bar... ;-)

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