CONTROL VALVE

摘要

A manually operated clutch valve adapted for use with a forward-reverse clutch provides modulated flow by use of a combination of linearly tapered metering slots and passages on the valve spool lands. The valve provides for linear pressure rise for proportionate lever movement in addition to the capability of selection of forward or reverse clutch engagement. Linear pressure rise occurs until about 90% of the maximum spool travel has been achieved at which point the full flow is abruptly provided to produce engagement of the clutch and thereby prevent a stick clip clutch condition.