| 摘要 |
The invention relates to an expansible chamber type of device which is especially adapted for use with high pressure operating fluids. The device has a valve which directs pressurized fluid from an inlet port to the expanding chambers thereof and non-pressurized fluid from the contracting chambers thereof to an outlet port. A valve sealing arrangement is provided whereby pressurized fluid is utilized to bias the valve into sealing engagement with a valve block which contains passages leading to the expanding and contracting chambers. A main feature is that the inlet and outlet ports are reversible from the standpoint that either port may be used as the inlet port to obtain a desired direction of rotation without adversely affecting the operativeness of the sealing arrangement.
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