| 摘要 |
A throttling device for fluids comprises a flexible tube in which the fluid is conveyed which has a compressible wall to vary the flow cross-section therethrough. The tube is received on a base plate which has a continuous channel of a size to receive the tube, and it is covered by a cover plate which has a projecting surface of a dimension and location to be positionable into the groove for compressing the tube therein, and which further includes control means for moving and the base plate relatively so as to vary the pressure acting on the tube and thus the flow cross-section therethrough.
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