When installing PEX tubing would there be any benefit in putting 2 pinch clamps over each nipple instead of 1 to prevent leaks? I am not concerned about the cost, as I bought more than 2x the clamps I need as a wholesale lot at a huge discount.
Background:
I will be installing Vitasalus whole house filtration system in my parents house after using the same system in my house for a couple of years. My install has been done by a plumber who used copper rings and initially about every other connection leaked, then all but one stopped. The remaining one leaks ever so slightly as to not warrant a call. This time I am doing work myself and using SS clamps.
Best Answer
I assume you mean two crimp clamp rings one after the other (i.e., side by side) and not one on top of the other. Putting on two clamps might trap water between the two clamps. Mold and bacteria could grow in this space. This volume would not be swept by flow and would probably be anaerobic.
Unless doubling up on the clamps is a described optional 'heavy duty' installation method, this kind of installation would be contrary to the instructions/specifications for the system. It could fail inspection.
If you wanted to do something which would improve the quality of the system, I think a much better approach would be to implement a system where each clamp connection could be inspected with the house finished walls in place. This might be small ports with inconspicuous covers. They could be so small that a borescope might be required.