Supplies backup breathing gas to the diver.

Provides an additional flow of gas into the helmet for ventilation and defogging.

Retrofits to many previous Kirby Morgan Helmets and BandMasks®, has less breathing resistance than the older single valve exhaust while providing an extremely dry hat. The Tri-Valve® Exhaust is made of a chemical resistant compound.

Bands hold the Hood/Face seal in place on the mask frame. They also provide the mounting studs for the Head Harness (Spider).

Keeps the mask in place on the divers head. The neoprene rubber spider has adjustment holes for varying the tension of the harness.

Multi use side block has additional ports built in to provide controlled air flow, if needed.

Prevents loss of gas pressure in the event of umbilical damage, preventing a "squeeze".

Provides an additional flow of gas into the helmet for ventilation and defogging.

Provides a constant reading of the pressure in the diver's umbilical. The scale on the gauge is 0-300 P.S.I. (0-20 Bar). Recommended umbilical pressure range 150-225 P.S.I.