Quote Originally Posted by taytay
butane is corrosive, and pvc when decomposing releases hydrogen chloride. it may be perfectly safe, i don't know, but i would try a material a little less toxic than pvc has been proven to be
PVC is a bad idea if you are running any sort of gas through it. Hydrogen chloride gas is near any heat source could entice it to be hydrochloric acid. Go with something like surgicial steel if you can get your hands on it.