| 摘要 |
An improved valve for high speed, high pressure pumps, having a dished, rectangular-sectioned, radially stretched seal overhanging the valve body to both cushion and seal the body's closure against the valve seat, and which is pre-stressed in tension sufficiently to stiffen against pinch off under the high fluid pressures of, and to attain full elastic shape recovery in the very brief time interval between the valve closings of, such pumps.
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