I really didn't mean to make a mean joke (metal heads) but you are wrong again. Not all plastics have to be derated @ 70 deg.I really do agree some plastics are limited to both temperature and pressure. Consider 60% of plant air is 150 psi and below running at ambient temp. Indoor.
So the UV...
Plastic fittings are tappered tightning these fittings will only cause more stress and more leaks. Not all pastes are recomended for plasitc piping. would recomend you talk to a plastic professional. www.harringtonplastics.com has a industrial engr guide for all kinds of plastics.
Normally...
Man, What a bunch of metal heads. Duraplus Airsystems and the new duratec coiled system for 1" and down.
250 psi compression joints small bore and 2" and above solvent weld coiled system is hdpe encapsulated aluminum. cost a fraction of copper and clean (no metal pits) so filter requirements are...
Are you having leak problems only at threaded and flange areas?
What kind of pressure and temperature are you running at?
Anytime you put threads on Polypro you derate pressure almost 50%. Flange gasket materials can be an easy fix .Send me the applications and I will try to help.Detecting the...