Using Pex crimps/Bends with polybutylene

Old 07-12-06, 01:35 PM
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Using Pex crimps/Bends with polybutylene

Are there any problems associated in using PEX crimps, elbows, and straight unions with polybutylene piping? I'm using the
1/2" crimps and crimper on 1/2" polybutylene pipe.

No leaks so far....But are they coming?
Old 07-12-06, 04:43 PM
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The reason PEX was frowned upon in the first place was not the tubing itself, but the copper ring compression fittings. I just pulled one from a house with a classic off center crimp. In addition, the crimp was not even over the copper elbow, so it was a disaster waiting to happen. Luckily it just leaked a little into my customer's garage light fixture.
I believe there is a new and improved crimping tool out there, but I have not seen it, yet.
If I understand it correctly, pex is polybutylene. Use caution and carefully inspect your joints.

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