Second stage air regulator for underwater breathing

摘要

An improved in-line, downstream-demand, second-stage air regulator for underwater breathing apparatus. The regulator has an elongated body having the flexible air supply hose affixed at one end and the mouth affixed at the other end in line with the air supply hose. The device is particularly adaptable for use as an auxiliary supply source. It is activated by a diaphragm located in the side of the body and the exhaust valve preferably exhausts the air at the end of the regulator body adjacent the air supply hose.