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PEX connector leak - toolmiser - 05-22-2019

I had a "small project".  I needed to connect two separate 1/2 pex lines with a shut-off between the two.  I got two "T's" and a barbed shutoff.  Menard's employee told me I needed an "expansion tool" which I purchased along with the "collars".  

It went together ok, but I get an occasional drip from both "t"s.  I don't know what I did wrong, or how to fix it.

Any thoughts?

Appreciate responses-don't see similar problem online that anyone has a response to.


RE: PEX connector leak - blackhat - 05-22-2019

First suspect is that you expanded Pex B.  Do the other fittings in the existing lines have collars or metal crush rings?  Can you read the info that was printed on the existing pipe?


RE: PEX connector leak - Wild Turkey - 05-24-2019

Are the tee's exposed to air?  Could it be condensation?

Otherwise I agree with wrong connector for the Pex tubing you got.


RE: PEX connector leak - WxMan - 05-24-2019

Can you post links to the Menard's web site links for the products you used (pex tube and the connectors)?  Might help us understand exactly what what you're joining together.

If you have the receipts for what you purchased, the SKU numbers will take you to the product page.


RE: PEX connector leak - toolmiser - 05-24-2019

My pex is 20 years old, it's not condensation, I am pretty sure that style wasn't made to be stretched.

I see Home Depot has the connectors that don't require the stretching and use band clamps. I've had success with them before.

I get about 4 drips total a day, but that is 4 too many. Too much going on, and hate to shut the water off with wife and chillens home this weekend, maybe get the right connectors and try again Tues.

What our your thoughts about returning the used "expander" for a refund from Menards? I did use it 6 times, but I bought it on their advice.


RE: PEX connector leak - Phil Thien - 05-24-2019

(05-24-2019, 08:45 PM)toolmiser Wrote: What our your thoughts about returning the used "expander" for a refund from Menards?   I did use it 6 times, but I bought it on their advice.

In that case, back it goes.


RE: PEX connector leak - Roly - 05-24-2019

(05-22-2019, 09:55 PM)Reread blackhat\s post. blackhat Wrote: First suspect is that you expanded Pex B.  Do the other fittings in the existing lines have collars or metal crush rings?  Can you read the info that was printed on the existing pipe?

If they do have metal rings you need to replace all the fittings you made with the expander.    Pex A should have pex collars not metal rings.   Pex B or C use the metal rings and not the collars, they are not interchangeable.  Also use the correct fittings.   Roly


RE: PEX connector leak - toolmiser - 05-25-2019

Here is what I have

PowerPEX (type A) Expansion 1/2" Grip Tee
Compatible with Sioux Chief Power PEX-A and tubing marked F1960 including Upnor/Wirsbo AquaPEX

Now I am starting to realize I got the wrong fittings and tool. They didn't have the fitting for the metal crush rings, it looks like Home Depot does.


RE: PEX connector leak - toolmiser - 05-28-2019

Got it fixed today, thanks to your suggestions. I went to Home Depot along with a sample of the PEX I had and told the employee what I wanted to do. He opened a package of fittings to show me they would work. I used my crimping tool for the "collars".

It should have worked that way in the first place, I guess I was to blame.

Anyways all done-knock on wood!


RE: PEX connector leak - Stwood_ - 06-03-2019

(05-28-2019, 08:19 PM)toolmiser Wrote: Anyways all done-knock on wood!

Cool