VALVE ACTUATOR TWO ROTOR THREE POSITION

A two-rotor, three-position indicator for a valve actuator is connected to receive rotary input from at least two independently operating rotors connected inside the geared limit switch of a valve actuator. Individual drive lugs moved interconnected gearing to cause a pointer to indicate whether the...

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1. Verfasser: IVAN E. WILKINSON ET AL
Format: Patent
Sprache:eng
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Zusammenfassung:A two-rotor, three-position indicator for a valve actuator is connected to receive rotary input from at least two independently operating rotors connected inside the geared limit switch of a valve actuator. Individual drive lugs moved interconnected gearing to cause a pointer to indicate whether the valve stem is open, closed or in-between those two oppositely disposed limits.