| 摘要 |
The present invention relates to a subsea hydraulic actuator with spring return, wherein the spring is directly exposed to sea water, is made of an inert material that is corrosion-resistant and has a special structure. The spring is mounted in a movable frame (3) that is coupled by special attachment means to the actuator rod (5) and is in sliding contact with a stabilising extension (4) of the actuator rod (5) through two or more guide slots (20). |
