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-   -   Connecting two pieces of 1/4" copper coil tubing (http://www.diychatroom.com/f7/connecting-two-pieces-1-4-copper-coil-tubing-160802/)

dankoos 10-22-2012 08:56 AM

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.

joecaption 10-22-2012 09:21 AM

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

dankoos 10-22-2012 09:24 AM

Quote:

Originally Posted by joecaption (Post 1035587)


forgive my stupidity, but how does one install that? does it sweat on? Does it get crimped on somehow?

DannyT 10-22-2012 09:33 AM

it solders on

dankoos 10-22-2012 09:35 AM

Quote:

Originally Posted by DannyT (Post 1035593)
it solders on

I was wondering that, you can solder 1/4" copper flexible tubing?

joecaption 10-22-2012 09:36 AM

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.

dankoos 10-22-2012 09:51 AM

Just to confirm, flexible copper tubing that is typical for a fridge hookup CAN be soldered?

joecaption 10-22-2012 09:56 AM

Yes it can.

SeniorSitizen 10-22-2012 11:30 AM

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. :yes:

dankoos 10-23-2012 03:06 PM

Quote:

Originally Posted by joecaption (Post 1035587)

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?

rjniles 10-23-2012 03:22 PM

Go to a real plumbing supply house.

biggles 10-23-2012 04:26 PM

could of used just a 1/4" brass compression union :wink: the ferrels would of locked and sealed the 2-1/4" lines within..finger tight then adjustable wrenchs to tweek....:thumbsup:

dankoos 10-23-2012 04:29 PM

Quote:

Originally Posted by biggles (Post 1036557)
could of used just a 1/4" brass compression union :wink: the ferrels would of locked and sealed the 2-1/4" lines within..finger tight then adjustable wrenchs to tweek....:thumbsup:

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.

SeniorSitizen 10-23-2012 04:43 PM

Quote:

Originally Posted by dankoos (Post 1036561)
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.

COLDIRON 10-23-2012 06:15 PM

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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