| 摘要 |
A pressurised cylinder having a shut-off valve having a valve element (6) which seals with the valve seat (11) and linearly moveable valve stem (18) coupled to the valve element. A lever (27) is coupled via an eccentric coupling (38) to the valve stem, such that rotation of the lever about a pivot axis (L) causes the linear movement of the valve element. Between the eccentric coupling and the valve stem, there is an amount of play (39) in the direction of opening of the valve. A resilient member (50) provides a biasing force on the eccentric coupling when the valve is closed which holds the eccentric coupling and hence the lever in a fully closed position. |
