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Duly noted! That shop was notoriously cheap in just about every other regard I can think of- they didn't maintain the compressor that fed that system, so when the pressure relief valve on it failed after everyone went home one night- as no one bothered to turn it off, it just kept running and running, which is why it burned itself out. I'm actually surprised that the PVC system didn't fail during my time there, it looked like it had been there forever. Instead of replacing a $10 valve, they instead got to replace a $400+ compressor. *shrugs*DocsMachine wrote:-Yes, it is in fact "right out".jecook wrote:... I take it schedule 40 PVC is right out?
PVC has a poor "fatigue strength", and after a certain number of cycles near its pressure rating, will at some point crack and fail.
It's not really an "if", it's a "when". It will eventually fail.
And when it does, it throws out shrapnel- it doesn't "peel open" like a beer can, it shatters like glass, throwing sharp fragments.
If it were as easy as using PVC, I'd have had a nice air line up over a decade ago. But I want something that I can put up and have a high degree of trust in for years to come. The RapidAir/MaxLine stuff is relatively new enough it doesn't have a particularly long track record, but the technology behind it (the way the fittings work and such) is pretty mature. I should be able to be pretty confident that this MaxLine stuff will last me at least the next ten years, maybe twenty.
DocsMachine wrote:-That's part of why I like it, too. With the copper, I'd been trying to figure out a clean and easy way to have a "wall tap"- I want a solidly-mounted QD connection, so that tugging on the hose, accidentally or purposefully, doesn't stress and possibly damage the tubing.
I was hoping I could find something sweat-on that was suitable, but I haven't been able to find anything even close. Making a block out of aluminum would be possible, but I tended to worry- justifiably or not- about galvanic action at each connection, with copper screwed into aluminum.