| 摘要 |
A valve (10) which includes a valve body (12) having a plurality of ports (32) around the periphery thereof, which open onto a central opening (22). A drum assembly (14) is configured to fit within the opening (22) and is mounted for rotation therein. The drum assembly (14) also includes a plurality of openings (38) around the periphery thereof, which are arranged to be capable of being in registry with the openings (22) in the valve body (12). The drum assembly includes a vane member defining interior passageways connecting the openings (22). An actuator assembly (18) is adapted to rotate the drum assembly (14) within the valve body (12) in response to electrical actuation signals.
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