Pressure demand valve system

Details Pressure demand valve system Pressure demand valve system

A - Human Necessities

62

B

137/1.54

A62B 9/02 (2006.01) A62B 7/00 (2006.01)

Patent

CA 1116493

PRESSURE DEMAND VALVE SYSTEM ABSTRACT OF THE DISCLOSURE A respirator having a combination demand air regulator to provide air to the user on demand and an exhaust check valve. The regulator diaphragm, by its inward movement during inhalation, causes the exhalation valve to close while regulating the intake of supply air. Conversely, the regulator diaphragm, by its outward movement during exhalation, causes the exhalation valve to open while keeping the demand valve closed.

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