| 摘要 |
The invention relates to a gas regulating and/or controlling device comprising: a body (1) with a gas passageway, inlet (2) and outlet (3), the inlet and outlet being connected to the passageway; passageway closure means (5, 6, 7, 8); and movable means (9) defining with the body (1) of the device a low-pressure chamber (11) downstream of the closure means (5, 6, 7, 8), the movable means (9) operating the closure means (5, 6, 7, 8) as a function of the pressure in the low-pressure chamber (11). The closure means (5, 6, 7, 8) comprise a first closure member (5, 6) and a second closure member (7, 8), the latter downstream of the former inside the passageway, and the first and second closure members (5, 6, 7, 8) are mechanically connected so that the first closure member (5, 6) closes before the second (7, 8). |
