(1) Regulator consisting of a small cock or faucet or valve for letting out air or releasing compression or draining
(1) Steam for ten minutes, then shut off the steam by either closing the petcock or dropping the weight gauge into place.
(2) This time I put a piece of tape over the petcock opening instead of using the screw on block off plate I had made to use on the first steps.
(3) They were fitted with a dial gauge, a vent port in the form of a petcock or counterweight, and a safety fuse.