The Car Valve Actuator (CVA) fits inside a railroad tank car dome, seated on the valve handle, and closes the valve when ... VALVE HANDLE LOCATOR MARKS LIFTING MANOLE beset selector Switch ACTUATOR SHAFT TOP VIEW Figure 2. ... The actuator shaft can be accessed from above the top bearing plate to allow manual opening and closing of the valve ... Thus we have a classic case of meeting important criteria for a diagnostic expert system application: a device critical toanbsp;...
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