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I have a Kenmore refrigerator (model 53552200), and want to connect a 1/4" polyethylene line for the incoming water. I'm guessing the connection is something similar to right portion of the following image, but want to make sure before I go to hardware store:

(i.e. brass compression nut, brass tube insert and with a plastic "sleeve"; although 1/4" in my case). Does this sound right?

When tightening it, what is a good rule of thumb to avoid over- and under-tightening the connection?

Update / secondary question: I bought this Watts Ander-Lign Compression Nut from the store, which says it is compatible with plastic tubing. Does a nut like this need a plastic sleeve? If not, would a different compression nut---that is compatible with a plastic sleeve---be preferred? NOTE: the picture above is NOT the Watts Ander-Lign compression nut I have---I just needed a picture of a plastic sleeve to aid my question

update 2: I haven't found a definitive answer on this yet, so any help you can provide is greatly appreciated :-)

Glorfindel
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Dolan Antenucci
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2 Answers2

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Watts claims their Ander-Lign fitting is universal and specifically says it can be used with plastic tubing carrying water.

The fact that they are using an insert makes the fitting stronger than the usual water filter/frig water supply fittings which are simple "push in" type fittings.

Here's an example of the other style: http://www.freedrinkingwater.com/parts/fittings/jg-whitepoly-male-connector.htm

I think you should be fine.

Philip Ngai
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Don't use plastic tubing if you can avoid it. Sooner or later it will develop a pin hole or pull out of the fitting resulting in water damage. A braided stainless line is much more durable, especially for a refrigerator ice maker installation. A 10 ft braided line is about the same cost as a plastic line kit.

Jerry
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