Valve
device that regulates, directs or controls the flow of a fluid or a gas
ventilation valve
flame arrester
ball valve
Vent
brass instrument valve
choke valve
Two pressure relief valve
rotary valve
Schrader valve
globe valve
butterfly valve
Flow control valve
Pilot-operated relief valve
flutter valve
Vacuum breaker
ball pump needle
clutch delay valve
check valve
gate
cask breather
Christmas tree