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Old 11-29-2012, 04:48 PM   #1
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Polyethylene compression fitting


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


Polyethylene compression fitting-push-.jpg

Polyethylene compression fitting-compression.jpg

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Old 11-29-2012, 05:14 PM   #2
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Polyethylene compression fitting


Replace the whole line with a braided ice maker line.

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Old 11-29-2012, 05:16 PM   #3
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Polyethylene compression fitting


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Replace the whole line with a braided ice maker line.
Thanks. That's not an option. The polyethylene is routed behind a baseboard.

Tipsy
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Old 11-29-2012, 05:47 PM   #4
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Polyethylene compression fitting



http://www.kimsupply.com/Products/Co...male-Connector

This looks like its the answer to your question

Mark
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Old 11-29-2012, 05:55 PM   #5
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Polyethylene compression fitting


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Originally Posted by Jackofall1 View Post
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.


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

Tipsy
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Old 11-29-2012, 07:18 PM   #6
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Polyethylene compression fitting


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.

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Old 11-29-2012, 07:25 PM   #7
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Polyethylene compression fitting


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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 View Post
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?
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Old 11-29-2012, 07:29 PM   #8
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Polyethylene compression fitting


As long as you use the sleeve inside the tubing you will be fine with an integrated compression furl.
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Old 11-29-2012, 08:50 PM   #9
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Polyethylene compression fitting


always use brass connectors with plastic tubing and brass stiffners.... ben sr
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Old 11-29-2012, 08:56 PM   #10
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Polyethylene compression fitting


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always use brass connectors with plastic tubing and brass stiffners.... 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

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Old 11-30-2012, 01:20 PM   #11
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Polyethylene compression fitting


Quote:
Originally Posted by Jackofall1 View Post
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.

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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.
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Old 11-30-2012, 04:10 PM   #12
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Polyethylene compression fitting


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.
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Old 11-30-2012, 04:13 PM   #13
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Polyethylene compression fitting


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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?
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Old 11-30-2012, 04:31 PM   #14
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Polyethylene compression fitting


Quote:
Originally Posted by TipsyMcStagger View Post
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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