Air is delivered to the mask through a non-return valve and a air control valve mounted on the right side. The air control valve allows for regulation of airflow for diver comfort. The exhaust valve is the same standard unit as on the Pool Mask. Threading on the non-return accepts 9/16"-18 Oxygen fitting.

The "Jack Browne" Full Face Mask was designed for use by the U.S. Navy during World War II. It served reliably to the mid-1980's. After WWII it found acceptance in the commercial market on dives where surface supply air was necessary but heavy gear was not needed. The DESCO Full Face Mask still fills this need today in a dependable and cost effective manner.

All the Full Face Masks share the same basic design. The mask has a rigid brass frame with a compression molded natural rubber face seal. This seal combined with the 5 point head harness creates a tight yet comfortable fit. The head harness is equipped with quick release buckles for easy removal. The large acrylic window gives excellent visibility.