heavy duty pvc. is rated at 480 psi ive seen it used at boat yardes i have a pipe running from my house 200 feet to my shop its underground works fine for me running 150 lbs. only trouble they had at the boat yard was the fence getting bumped then the pipe would get broke but was easy to fix another thing i did was hook up a 2nd 80 gallon tank to my compressorfor more air storage
