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TipsyMcStagger 11-29-2012 03:48 PM

Polyethylene compression fitting
 
2 Attachment(s)
I have a 1/4" polyethylene line running to my fridge to supply the ice maker. The polyethylene was connected to a push-in type plastic connector that cracked reulting in a leak. The push-in connecter had a union and that was screwed into a standard stainless ice-maker line with o-ring fittings.

I want to eliminate the plastic to preclude any future failure as a result of cracking, so I purchased a 1/4" brass compression fitting and the brass insert for to prevent the polyethylene line from crushing.

My concern is with regard to the ferrule. The brass compression fitting has an integrated brass ferrule. Is this acceptable for polyethylene line or do I need to buy a brass fitting without an integrated ferrule and use a plastic ferrule for the polyethylene?

Thanks.

Tipsy


Attachment 61193

Attachment 61194

rjniles 11-29-2012 04:14 PM

Replace the whole line with a braided ice maker line.

TipsyMcStagger 11-29-2012 04:16 PM

Quote:

Originally Posted by rjniles (Post 1063149)
Replace the whole line with a braided ice maker line.

Thanks. That's not an option. The polyethylene is routed behind a baseboard.

Tipsy

Jackofall1 11-29-2012 04:47 PM

http://www.kimsupply.com/midlandMeta...40&resizew=240
http://www.kimsupply.com/Products/Co...male-Connector

This looks like its the answer to your question

Mark

TipsyMcStagger 11-29-2012 04:55 PM

Quote:

Originally Posted by Jackofall1 (Post 1063166)
http://www.kimsupply.com/Products/Co...male-Connector

This looks like its the answer to your question

Thanks. If I were to go that route, I'd probably be better off with this since it would eliminate the need for a threaded union.
http://www.kimsupply.com/midlandMeta...40&resizew=240

But I'm still interested in knowing the answer to my question regarding the use of a brass vs. plastic ferrule for polyethylene.

Tipsy

Jackofall1 11-29-2012 06:18 PM

Push-lock fittings don't need a furl, you only use a furl and sleeve on a compression fitting the sleeve is to prevent the poly from crushing.

Mark

TipsyMcStagger 11-29-2012 06:25 PM

Quote:

Originally Posted by Jackofall1 (Post 1063222)
Push-lock fittings don't need a furl, you only use a furl and sleeve on a compression fitting the sleeve is to prevent the poly from crushing.

Hence my original question. I'm not asking about push-lock fittings.

Tipsy

Quote:

Originally Posted by TipsyMcStagger (Post 1063133)
I want to eliminate the plastic to preclude any future failure as a result of cracking, so I purchased a 1/4" brass compression fitting and the brass insert for to prevent the polyethylene line from crushing.

My concern is with regard to the ferrule. The brass compression fitting has an integrated brass ferrule. Is this acceptable for polyethylene line or do I need to buy a brass fitting without an integrated ferrule and use a plastic ferrule for the polyethylene?


Jackofall1 11-29-2012 06:29 PM

As long as you use the sleeve inside the tubing you will be fine with an integrated compression furl.

ben's plumbing 11-29-2012 07:50 PM

always use brass connectors with plastic tubing and brass stiffners....:thumbsup: ben sr

TipsyMcStagger 11-29-2012 07:56 PM

1 Attachment(s)
Quote:

Originally Posted by ben's plumbing (Post 1063277)
always use brass connectors with plastic tubing and brass stiffners....:thumbsup: ben sr

Thanks. I just put it together and the polyethylene blew out of the compression fitting when I turned the water on. I guess I didn't have it set properly because I reinstalled it and it seems to be holding fine now. No leaks.

Tipsy

Attachment 61203

tylernt 11-30-2012 12:20 PM

Quote:

Originally Posted by Jackofall1 (Post 1063225)
As long as you use the sleeve inside the tubing you will be fine with an integrated compression furl.

This has not been my experience. Flooded the kitchen and stained nearby carpet.

Quote:

Originally Posted by TipsyMcStagger (Post 1063281)
Thanks. I just put it together and the polyethylene blew out of the compression fitting when I turned the water on.

You mean, no leaks YET. ;) Ours silently blew when someone moved the fridge a few inches.

The way I made a secure polyethylene connection was to use the standard compression nut and brass insert, but THROW AWAY the brass ferrule and purchase a delrin or other type of plastic ferrule. So far, that seems to be holding.

rjniles 11-30-2012 03:10 PM

Running that poly tubing behind or thru cabinets is a disaster waiting to happen. Its not if it will leak it is when. And it will be when you are away for a few days.

tylernt 11-30-2012 03:13 PM

Quote:

Originally Posted by rjniles (Post 1063744)
Running that poly tubing behind or thru cabinets is a disaster waiting to happen. Its not if it will leak it is when. And it will be when you are away for a few days.

Does the PE tubing rub on the wood and wear a hole in itself eventually, or what?

DIYGST 11-30-2012 03:31 PM

Quote:

Originally Posted by TipsyMcStagger (Post 1063281)
Thanks. I just put it together and the polyethylene blew out of the compression fitting when I turned the water on. I guess I didn't have it set properly because I reinstalled it and it seems to be holding fine now. No leaks.

Tipsy

Attachment 61203

I have done it before and it works as long as it's not overtightened or undertightened.. How do we know this is not going to just pop out in the middle of the night?

Also I found the clear plastic kind sold at big box store kind of cheap and can split but the blue ones seem to be higher quality... (sold at water supply places)


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