Patent ID: 8171931

Claim:
A valve unit for a rebreather apparatus that recycles gas exhaled by a user, comprising: a housing ( 5 ) with a first port for communication with a respiratory system of the user; a first inlet port ( 9 ) for breathable gas in said housing; a first exit port for exhausting gas from said housing into a flow channel; at least one separate second exit port ( 12 ) for exhausting gas form said housing ( 5 ) into an ambient environment; a second inlet port ( 13 ) for breathable gas connected to an open loop inlet valve ( 6 ) in said housing ( 5 ); and a valve body ( 4 ) in said housing ( 5 ) forming a valve for switching between two operating modes, and where the valve body ( 4 ) is formed as a barrel or cylinder with valve openings sealing against the housing ( 5 ), where the valve body ( 4 ) forms an internal cavity ( 18 ), alone or in combination with the housing ( 5 ), in connection with the port ( 10 ) for communication with a user, characterized in that said valve ( 6 ) has an outlet in said cavity ( 18 ).