PB to PEX adapter and crimping

trewq · Aug 9, 2010

I have the gray PB pipes and need to transition to PEX.

The Polybutylene to PEX adapter fitting comes with a copper colored crimp ring for the PB side and a black crimp ring for the PEX side.

Can I use the same 1/2" rental crimp tool (which says its for PEX) for both rings or do I need a PB crimp ring tool as well?

I have had different answers from different people and would like clarification.

Thank you.

Jerome2877 · Aug 9, 2010

Yes you use the same tool.

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trewq · Aug 10, 2010

Why are the crimp rings different? They look to be the same size & thickness.

What would happen if you used a black one on the PB side or the copper colored one on pex?

Jerome2877 · Aug 10, 2010

I don't know, never tried it. Maybe the hardness of the ring is different?

JohnjH2o1 · Aug 10, 2010

There both copper and the same size. Don't know the reason why one is painted black. I guess it's so the can call it a PEX ring instead of a POLY ring.

John

hj · Aug 11, 2010

The black one should be just slightly different

Dahlman · Aug 26, 2010

hj said:
The black one should be just slightly different

hj is correct. I don't have the dimensional specs nearby but I know that they are definitely different because I looked into this very question 2 years ago. I would NOT interchange them.

PB to PEX adapter and crimping

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