| 摘要 |
The temp. dependent actuator for controlling a valve has a temp. responsive sensor (1) including a variable volume chamber (5) whose interior communicates with an actuator chamber. The latter contains a variable volume member connected with an actuator operating member to move it in dependence on volume changes of the member. The sensor also has a temp. responsive unit connected with the variable volume chamber so that volume changes, caused by a temp. rise, enables fluid to flow from the actuator chamber and the volume of the variable volume member to increase with resultant movement of the operating member.
|
