| 摘要 |
A temperature dependent actuating device for a valve having a closure member which must be moved from a first to a second position to close the valve, the actuating device comprising a body, an actuating member supported by the body and moveable from a first non-actuating position to a second actuating position, a biasing device urging the actuating member toward the second position, and a temperature dependent device for releasably retaining the actuating member in the first position provided the temperature is below a predetermined level. The body is adapted to be mounted such that the actuating member is positioned to engage the valve closure member such that if the temperature in the vicinity of the valve rises above the predetermined temperature, the actuating member is released and moves to its second position, moving the valve closure member to its second position and closing the valve.
|
