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Control and instrument air is predominantly SS, There is a magic pressure under which you could use copper but I'm not sure what it is. 30-50psi would be my guess. The issue as I understand it is one of quality control and the compress-ability of gasses. Fluids have incredible inertia, so if...

Back in welding school when they were just coming out I dropped 500 on a really nice optrex. Loved it. 3 years later some 'tard drove over it with a forklift. Only had enough $$$ for a 59.99 Princess Auto / HF. I used and abused it for over 10 years untill either I left it behind on a job or...

We seem to have a difference of opinion as to the definition of industrial. All of the mines, mills, gas plants etc I've ever been in had main supply lines far larger than the "others" allow for. For a 6"+ main it's not only the best choice it's likely the only choice. Point is moot and was...

Every industrial building in North America and I'm sure elsewhere uses sched 40 black iron pipe. Installed with pipe sealant (I prefer Teflon tape but others prefer the goo) there is no leaks. Pipe threads are tapered and need more torque than some realize. Unpainted with wet air they last for...