Re: Yet another problem
i've almost pulled this stunt many times on the homemade rig my brother uses. its all pvc screw together pieces with a copper tube for a stem, actually smokes very nicely for a $15 diy setup. next time i visit him, i'll get a pic if i remember. anyway, instead of a purge valve, he has a purge hole that's covered w/ tape, so you have to pull the tape up to purge. thankfully he uses a ridiculously long hose, so you notice the back pressure before you cause a volcano. been talkin about gettin him a screw-on nipple for a purge valve or something thin and flexible to use as a reed valve...