| 摘要 |
<p>A control valve (10) includes a housing (11), an inlet port (14) at the h ousing, a device port (18) at the housing, a valve port (22) at the housing, and a spool (12) disposed at the housing, the spool initially connecting th e inlet port (14) to the device port (18) and subsequently to a pressure eve nt connecting the inlet port to the valve port. An actuation system includes a plurality of control valves, each valve being addressable and conditionab le to communicate with one of a device and another control valve, and a plur ality of devices each in operable communication with one of the plurality of control valves.</p> |
