Gas valve

A regulator device configured to reduce the gas pressure of a source of pressurized breathable gas in a self contained underwater breathing apparatus, comprising:

• a regulator housing;
• a gas inlet opening located within a bore in the regulator housing;
• a gas valve, comprising:
• a housing possessing an inlet opening and an exit opening;
• a passageway extending downstream of the inlet opening;
• a filter located within the passageway proximate the exit opening and distal the inlet opening so that fluid must pass through the filter to pass through the exit opening;
• and
• a retainer device for removably securing the filter within the exit opening of the passageway;
• and
• a moveable cover member adapted to cover the inlet opening of the gas valve, the moveable cover member having a range of motion between a first position wherein the moveable cover member covers the inlet opening and a second position outside of the passageway wherein the moveable cover member is displaced from the inlet opening, the moveable cover member being biased towards the first position;
• wherein the housing of the gas valve includes a portion threaded into the bore of the regulator housing;
• wherein the exit opening of the gas valve is in fluid communication with the gas inlet opening of the regulator housing;
• wherein the moveable cover member is adapted to move from the first position to the second position when the valve is attached to a source of compressed gas;
• and
• wherein the moveable cover member is adapted to automatically move from the second position to the first position when the valve is disconnected from a source of compressed gas;
• further comprising a screw member threadably connected to the housing and attached to a hand knob, the screw member being distal from the moveable cover member with the moveable cover member being in and biased into the first position.