| 摘要 |
<p>The purpose of the invention is to provide a valve actuator with an activating pin of a simple construction. This purpose is achieved by the present invention as recited in claim 1, where in the first position the piston (77,84) is at a first predetermined distance from the first end (92) of the cylinder (70,99,136,142), in the second position the piston (77,84) is at a second predetermined distance from the first end (92) of the cylinder (70,99,136,142), said second predetermined distance being larger than said first predetermined distance, and the housing (100,104,120,121,149,132) comprises a channel (71,72,73,74,80,81,133,134,135) for allowing the conduction of gaseous and/or liquid .media between the cylinder (70,99,136,142) and the coupling section (103,110,130,147) when the piston is in the first piston position, inhibiting the conduction of gaseous and/or liquid media between the cylinder (70,99,136,142) and the coupling section (103,110,130,147) when the piston is in the second piston position.</p> |
