Membrane valve device with improved sealing including a gas supply pipe, valve chamber and housing, a control chamber, and a cylindrical flexible sealing ring useful for respiration devices

摘要

Membrane valve for a respiration device with a gas supply pipe (2) which leads in valve housing (3) to valve chamber (6) and ends at valve seat (4), gas outlet pipe (5), valve chamber (6) covered by valve body (7), valve seat (4), a control chamber (28) with an end (31), a cylindrical flexible sealing ring (25) forming one piece with valve housing (3), closing cover (15) with its cylindrical wall section (18).