Originally Posted by
Timothy M. Barr
I did a little test on pex I hooked it up to compressed air, About 200 pounds Crimps held just fine
Timothy,
Try a better and more accurate test:
Use a micrometer and measure the outside diameter of the crimp rings.
Do your pressure test again. Repeat every few hours (to try to simulate varying pressures in the piping). Do this for 5 years, mic the crimp rings again every 6 months and see if there are any changes, mic them under pressure, under no pressure.
I don't know that you should see any growth in the size (diameter) of the crimp rings as that would indicate they are flexing, flexing metal fatigues and fails eventually.