| 摘要 |
PCT No. PCT/SE83/00404 Sec. 371 Date Jul. 5, 1984 Sec. 102(e) Date Jul. 5, 1984 PCT Filed Nov. 17, 1983 PCT Pub. No. WO84/01999 PCT Pub. Date May 24, 1984.An apparatus which functions as a combined outlet valve and a meter for a fluid. The apparatus comprises a space (2) in which a piston means (3) is reciprocatable and which is in connection with an inlet conduit and an outlet conduit on each side of the piston (3), each of said conduits being provided with a shut-off valve (5a, b; 6a, b). According to the invention the adjustment of the shut-off valves (5a, b, 6a, b) is effected by means (4, 8-14) acting by vacuum and/or atmospheric air.
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