| 摘要 |
A shut-off valve for controlling flow of a pressurized gas comprises a passage (5) between a gas inlet (3) and a gas outlet (4). The passage (5) is closed when a sealing member (9) is in a first position and open when the sealing member (9) is in a second position. In the passage (5) there is provided an elongated restrictor (7) which is displaceable in the longitudinal direction of the passage (5). The restrictor (7) is biased towards the sealing member (9) by a biasing element (6) acting on a first axial end of the restrictor (7) such that a second axial end of the restrictor is in contact with the sealing member. The restrictor at its second axial end extends in a radial direction of the passage to essentially cover a mouth (18) of the passage (5). Further, the restrictor comprises longitudinally extending guiding means (30) for guiding a gas flow between the gas inlet and the gas outlet when the sealing member is in the second position. The guiding means are arranged to allow gas to leave the passage in a radial direction of the restrictor. |
