demand valve
Noun
Meaning
demand valve (plural demand valves)
A mechanism in a diving regulator which controls the supply of gas by opening to provide flow when the user inhales, and shuts off supply when inhalation stops.
Noun
demand valve (plural demand valves)
A mechanism in a diving regulator which controls the supply of gas by opening to provide flow when the user inhales, and shuts off supply when inhalation stops.