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Newbie Installing Water Filter -- Small Leaks Driving Me Crazy!

Posted: 10 Jul 2013 12:13 AM By: rlowe82 Replies: 1

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  • Newbie Installing Water Filter -- Small Leaks Driving Me Crazy!

    Hi all!

    New to the forum because I'm trying to tackle my first plumbing job on our house. I'm installing a Culligan water filter but can't seem to stop the connector joint from leaking.

    I'm such a newbie that I don't even know the terminology, so bear with me:

    I have a 1/2" tube going from my water supply to a brass T-joint that has a 1/2" opening and a 3/8" opening. From the 1/2" opening, a tube runs to my faucet. From the 3/8" opening, I have a 3/8" to 1/4" adapter-thing, where the tube connects and runs to the water filter.

    When I turn my water back on, a very small leak comes from the 3/8" to 1/4" adapter and I can't seem to get it to stop. I used teflon tape and made sure the nut is on tight, but still can't figure it out. (See photo, the red lines indicate the leak.)

    Any ideas? I'd love to figure it out myself without having to call a plumber, because I feel like I'm so close to being done!

    Thank you in advanced!

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  • Re: Newbie Installing Water Filter -- Small Leaks Driving Me Crazy!

    These 1/4 tubes usually need a ferrel to make a seal. This will be a small brass tube that fits inside plastic tube and a small brass hollow ball shaped fitting that goes on outside of plastic tube. These create a seal inside the nut without collapsing the tube. Teflon tape will only create more leaks on this type of fitting as the seal is created by pressure on the round ferral by the nut. If you have thes in you may also check to see you have the tube seated inside the fitting all the way. Hope this helps.

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