| 摘要 |
PCT No. PCT/SE84/00236 Sec. 371 Date Jan. 28, 1985 Sec. 102(e) Date Jan. 28, 1985 PCT Filed Jun. 20, 1984 PCT Pub. No. WO85/00203 PCT Pub. Date Jan. 17, 1985.A valve system for gas or liquid, comprising a hydraulic power transmission (19) where the pressure of hydraulic fluid is controlled by fluid pressure actuated members (15) and the changes of the fluid pressure actuate operative members (5, 7, 10) of the valve system, where the fluid pressure actuated members and the operative members comprise a tubular expandable bellows (10, 14, 25) with one gable (21) closed and the other (22) connected via tubes (11, 23) or similar to other expandable bellows (10, 14, 25) in the valve system and the thus arisen closed space in filled with hydraulic fluid (24), and that the expandable bellows (10) in the operative member stand in connection with a valve body (5) in a valve tube (1) and that the fluid pressure actuated members (15) is placed outside the valve tube (1). The valve body (5) is movable in the longitudinal direction of the valve tube (1) and in close contact with a seat (3) when the valve system is closed. |
