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Old 10-22-2012, 08:56 AM   #1
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Connecting two pieces of 1/4" copper coil tubing


Ok, so just hooked up the new fridge. I had copper tubing running to the old one, but the new one is in a position further away from water pipe than the old one. Could not find a longer run of tubing at Lowes/HD, so just decided to connect two together. Bought a 1/4" union kit. Have tried this twice now, and both times I keep getting a bead of water that builds over a half hour or so on either side of the connection. It doesn't really drip, just sits there. So each time I see it, I tighten the connection further. Now, neither time did I use teflon tape...should I have? Other than that, what could I be doing wrong? I used a pipe cutter for a nice smooth cut on both pipes, made sure no sharp/loose edges, etc. Any added advice would be appreciated.

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Old 10-22-2012, 09:21 AM   #2
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Connecting two pieces of 1/4" copper coil tubing


http://plumbing.hardwarestore.com/52...t--671963.aspx

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Old 10-22-2012, 09:24 AM   #3
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Connecting two pieces of 1/4" copper coil tubing


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forgive my stupidity, but how does one install that? does it sweat on? Does it get crimped on somehow?
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Old 10-22-2012, 09:33 AM   #4
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Connecting two pieces of 1/4" copper coil tubing


it solders on
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Old 10-22-2012, 09:35 AM   #5
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Connecting two pieces of 1/4" copper coil tubing


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it solders on
I was wondering that, you can solder 1/4" copper flexible tubing?
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Old 10-22-2012, 09:36 AM   #6
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Connecting two pieces of 1/4" copper coil tubing


More often then not it's the inital over tightning of a compression fitting that causes leaks. Once it's over tightened the farrel starts to twist more on one side then the other.
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Old 10-22-2012, 09:51 AM   #7
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Connecting two pieces of 1/4" copper coil tubing


Just to confirm, flexible copper tubing that is typical for a fridge hookup CAN be soldered?
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Old 10-22-2012, 09:56 AM   #8
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Connecting two pieces of 1/4" copper coil tubing


Yes it can.
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Old 10-22-2012, 11:30 AM   #9
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Connecting two pieces of 1/4" copper coil tubing


The reason it is attempting to leak is the tubing is from a roll and not straight. In a pinch and with some skill that section to be inserted into the union ends can be straightened using a flaring tool but one has to know when to stop.

No Teflon tape on ferrule fittings, only pipe threads. If you are inclined to apply something for self satisfaction , a thin coat of plumber's grease usually makes things swage and turn with less resistance.

There is a reason I went to synthetic tubing for those type applications.
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Old 10-23-2012, 03:06 PM   #10
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Connecting two pieces of 1/4" copper coil tubing


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Lowes had a 1/4" coupling fitting..but it was for 1/4" inside diameter pipe and therefore is too big. Is online the only place to purchase such a thing?
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Old 10-23-2012, 03:22 PM   #11
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Connecting two pieces of 1/4" copper coil tubing


Go to a real plumbing supply house.
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Old 10-23-2012, 04:26 PM   #12
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Connecting two pieces of 1/4" copper coil tubing


could of used just a 1/4" brass compression union the ferrels would of locked and sealed the 2-1/4" lines within..finger tight then adjustable wrenchs to tweek....
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Old 10-23-2012, 04:29 PM   #13
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Connecting two pieces of 1/4" copper coil tubing


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could of used just a 1/4" brass compression union the ferrels would of locked and sealed the 2-1/4" lines within..finger tight then adjustable wrenchs to tweek....
that is what I tried...twice..maybe i am making them too tight...i get them pretty tight, then they get a bead of water. I tighten a little more each time i see that and it keeps coming. I saw a bead the most recent time, but the last time i wiped it off, it has not been back...so who knows. This connection is in an area where it won't be a big deal if it drips, so I will probably just let it go for now and see what happens. Will get fitting from local supply house to be prepared to sweat on a fitting if necessary.
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Old 10-23-2012, 04:43 PM   #14
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Connecting two pieces of 1/4" copper coil tubing


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that is what I tried...twice..maybe i am making them too tight...i get them pretty tight, then they get a bead of water. I tighten a little more each time i see that and it keeps coming. I saw a bead the most recent time, but the last time i wiped it off, it has not been back...so who knows. This connection is in an area where it won't be a big deal if it drips, so I will probably just let it go for now and see what happens. Will get fitting from local supply house to be prepared to sweat on a fitting if necessary.
In the good old days when those brass unions were bought by the box the instructions on the box were to tighten with the fingers until all slack was removed and it felt solid with the wrench then continue turning the nut 1 round.
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Old 10-23-2012, 06:15 PM   #15
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Connecting two pieces of 1/4" copper coil tubing


Go the store buy a new fitting, shut water off, cut old fitting out throw away (the compression rings are no good), install new compression fitting, tighten just snug, turn water on check for leaks, tighten a little bit not to much.

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