Replies

1. 
   AndrewF | May 05, 1999 06:57am | #1

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   Try backing the nut off and wrapping the fitting with teflon tape. That will usually stop a small leak. Don't overtighten the nut though, or your leak might reappear at a later date.

2. 
   Guest_ | May 05, 1999 07:15am | #2

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   if it is flex. copper tubing it will sometimes leak if the tubing is not straight in the fitting.You might take it apart and try to get the tubing to go in straighter.

1. 
   Guest_ | May 05, 1999 09:46pm | #3

   *Dupliate post??

1. 
   Guest_ | May 05, 1999 10:09pm | #4

   *If all the parts are brass or copper and the valve seats are teflon, you could try sanding, fluxing, and sweating everything together. You won't be able to service it in the future without ripping it all out. But it will probably fix this leak.If it were a flare connection, I'd suggest checking the flare and the seat for out-of-round or having a little ding. But since it's compression, I'd guess the ferrule just didn't set right. An intermediate solution (intermediate to sweating the whole thing) would be to sweat between the ferrule and the tubing, sand smooth any drips, and try again. I wouldn't expect teflon tape to help (although tape and dope often does help fix a threaded leak). Compression threads aren't where the seal is. Compression threads just provide the means to compress the ferrule around the tubing and into the seat.Charles: agreed, compression leaks are sometimes due to not having the tubing straight. Also can be due to the tubing being out of round where the ferrule seated. Unfortunately, once compressed, the ferrule doesn't budge. Most fuel (and brake fluid) lines that I have seen are flared fittings. Compression fittings are often found in lines to connect fridge icemakers, instant hot water dispensers, under-the-sink water filters, and the like. Good Luck. -David

3. 
   brent_collins | May 05, 1999 10:13pm | #5

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   I have a compression fitting that I can't seem to get a complete seal on. There isn't any room to cut the copper pipe and start over. The leak is not bad. You have to run your hand over the valve to notice it. Any advise on how to get a better seal without cutting the pipe? Thanks Brent