Abstract: A power inflator housing has a pressurized gas inlet for connection to a gas supply hose, an inflation outlet for connection to a buoyancy compensator inflation hose, a passageway connecting the gas inlet to the inflation outlet, and a valve actuating stem extending through part of the passageway into the gas inlet for selectively actuating a control valve at the outlet end of a gas supply hose coupled to the gas inlet. A manually operable button on the housing is linked to the stem for selectively urging the stem outwardly into an operative position to open the hose control valve. The stem is biassed towards an inoperative, retracted position.

Abstract: A safety valve for a buoyancy compensator has an inlet for connection to one end of an inflation hose for supplying gas to the buoyancy compensator, an outlet for connection to a gas inlet of the buoyancy compensator, and a passageway connecting the inlet to the outlet. A vent chamber has an orifice communicating with the passageway for allowing gas to vent through the orifice and out via vent outlets in the chamber. A valve member is pivotally mounted in the chamber for movement between a position closing the orifice and a pivoted position at an angle to the orifice. A pull cable extending through the inflation hose is directly coupled to the valve member so that pulling on the pull cable will tilt the valve member into the pivoted, open position.