| 摘要 |
91/004 Connecting valve and hydraulic oil safety and power system in which the connecting valve is used. This connecting valve (1) has at least one sealing location (5) which is actuated by means of a piston/ cylinder arrangement. A piston (3) is subjected to a pressure fluid and moved against the force of a spring (7). A connecting valve (1) is created which can be inspected for freedom of movement without influencing operation. The hydraulic oil safety and power system should be particularly operationally reliable by means of the connecting valve (1) in accordance with the invention. This is achieved by at least two pipes (17, 18) entering the drive volume (2) offset in the axial direction, of which pipes only one first pipe (17) is initially effective.
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