I'm planning on plumbing my shop for compressed air and I think I want to use nylon tubing, like what comes in the RapidAir kits. I don't want to use PVC for obvious reasons, and though I think PEX could technically work, its temeperature derating curve concerns me given the pressures and temperatures the material would see.
My question is this: has anyone ever used PEX barbed fittings and crimp rings with nylon tube? I'm not a fan of push-to-connect fittings and compression fittings are expensive and difficult to install in tight spaces. I'm sure brass PEX fittings could handle at least 160 psi (what I believe is PEX's maximum rating) and I think the dimensions are compatible with nylon tubing. What do you think? Thanks!