| 摘要 |
In a mixer valve of the single lever type the lever (4) activates, via a drive arm (20), an actuator (21) which is effective in displacing a movable valve plate (12) in relation to a stationary valve plate (11), therewith to adjust the relationship between hot and cold water delivered to the valve mixing chamber, this adjustment being effected through the medium of a valve plate dogging device incorporating the actuator. When the valve lever (4) is struck heavily with the risk of generating harmful pressure surges, a counter pressure is generated in an auxiliary chamber (23) defined in the actuator (21). The auxiliary chamber has arranged therein a plunger (42) which is connected to the main body of the dogging device (31), such that the plunger is immovable relative to the main body of the dogging device in either direction of movement of the actuator. A throttling device (25) arranged in the auxiliary chamber (23) coacts with the plunger (42) in a manner to essentially seal the passageway (24) when the actuator moves rapidly in the valve closing direction. When the valve lever is moved gently, or carefully, in its valve closing direction, the fluid present in the auxiliary chamber is able to leave the chamber without being obstructed by the throttling device (25). |
