| 摘要 |
Valve delimiting an internal circuit (3) extending between an upstream end (6) and a downstream end (5), the valve (1) comprising, arranged in series in the internal circuit (3): an isolation valve (7) and a dust valve (8), the isolation valve (7) being movable relative to a seat (9) between an upstream closed position of the circuit (3) and at least one downstream open position of the circuit (3), said isolation valve (7) being biased towards the upstream position of same by a return member (10), the dust valve (8) comprising a downstream end (108) and being arranged downstream of the isolation valve (7) and being movable relative to the body (2) between an upstream closed position of the upstream end of the circuit (3) and at least one downstream open position of the upstream end of the circuit (3), said dust valve (8) being biased towards the upstream position thereof by a return member (14), the valve (1) further comprising, in the internal circuit (3), a residual pressure valve (11) distinct from the isolation valve (7), the residual pressure valve (11) being arranged in series with the isolation valve (7) and downstream of the isolation valve (7). |
