| 摘要 |
The Sleeved Spool Fluid Power Control Valve uses the longitudinal movement of a sleeved spool to open and close the fluid inlet and exhaust ports in a valve body. The sleeve that surrounds the spool is integral with the spool. The longitudinally ported sleeve traverses the valve bore and always maintains contact with the sealing mechanisms. This provides for greatly extended seal life in high cycle valve applications such as found in a pneumatic pile driving hammer, where cycles of 60 per minute and more are common with air flows of 250 cfm and higher.
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