Expanding Pex (wirsbo System)

DonM

Hi:

I'm reading the instructions for expanding the pex tubing to fit on the proPex fitting.


It says to slide the ring no more than 1/16 of an inch onto the end of the tubing- then to insert the expander tool. The unexpanded ring and tubing will not initially go into the tools expander completely. This is normal. But then you re expand and the ring and tubing will then completely go to the shoulder of the tool. After re expanding a few times you can place on the fitting.

My question is after expanding does the ring slide back onto the tubing so that more than 1/16 of an inch of ring covers the tubing??? This is not clear to me and I need to know the proper method before I screw up!


thanks
Don

Ron The Plumber

Slip ring onto pex leaving ring 1/16" from end of pex, the ring will slip about that much during expansion so when expanded it will set just right, then slip over fitting and let pipe contract. It is normal the expansion head to not slip into pipe at start, thats what the tool is for, once fully expanded expansion head should recess into pipe/ring fully at that time.

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