Abstract: A preflushing unit (10) preflushes a breathing gas circuit (210) of a closed-circuit respirator (200). A basic body (20) has an inlet port (22), feeding breathing gas from a breathing gas supply (220), an outlet port (24) discharging breathing gas into the breathing circuit, and a flow section (32) fluid connecting a valve chamber (30). A valve body (40) with a sealing surface (42) is arranged in the valve chamber (30). An elastomer body (50) with a counter-sealing surface (52) in the valve chamber, fluid tight separates the flow section from a control section (34). The counter-sealing surface acts with a sealing force against the valve body for sealing the flow section. A control port (26) of the basic body provides a controlled feed of breathing gas from the breathing gas supply into the control section for pressure equalization between the flow section and the control section.

Abstract: A high-pressure connector (10), for a fluid-communicating connection of a breathing gas source (200) of a respirator to a pressure reducer (110), includes a connector upper part (20) with a connector upper part duct (22) with an inlet opening (24) for the inflow of breathing gas from the breathing gas source (200). A connector lower part (30) has a connector lower part duct (32) with an outlet opening (34) for the outflow of breathing gas into the pressure reducer (110). The connector upper part (20) is fastened reversibly with a fastening interface (26) to a counter-fastening interface (36) of the connector lower part (30). The connector upper part duct (22) is in fluid-communicating connection with the connector lower part duct (32). A filter device (40) is arranged in the connector upper part duct (22) in at least some sections for filtering solid particles out of the breathing gas.

Abstract: A preflushing unit (10) preflushes a breathing gas circuit (210) of a closed-circuit respirator (200). A basic body (20) has an inlet port (22), feeding breathing gas from a breathing gas supply (220), an outlet port (24) discharging breathing gas into the breathing circuit, and a flow section (32) fluid connecting a valve chamber (30). A valve body (40) with a sealing surface (42) is arranged in the valve chamber (30). An elastomer body (50) with a counter-sealing surface (52) in the valve chamber, fluid tight separates the flow section from a control section (34). The counter-sealing surface acts with a sealing force against the valve body for sealing the flow section. A control port (26) of the basic body provides a controlled feed of breathing gas from the breathing gas supply into the control section for pressure equalization between the flow section and the control section.

Abstract: A high-pressure connector (10), for a fluid-communicating connection of a breathing gas source (200) of a respirator to a pressure reducer (110), includes a connector upper part (20) with a connector upper part duct (22) with an inlet opening (24) for the inflow of breathing gas from the breathing gas source (200). A connector lower part (30) has a connector lower part duct (32) with an outlet opening (34) for the outflow of breathing gas into the pressure reducer (110). The connector upper part (20) is fastened reversibly with a fastening interface (26) to a counter-fastening interface (36) of the connector lower part (30). The connector upper part duct (22) is in fluid-communicating connection with the connector lower part duct (32). A filter device (40) is arranged in the connector upper part duct (22) in at least some sections for filtering solid particles out of the breathing gas.