1.1 This standard specifies the requirements and tests for ac ( 50 Hz ) and dc electric solenoid operated actuators used for positioning of control valves.
Note — This standard covers only the requirements of actuators but not the valve body even though generally they are supplied together by the manu-facturer.
1.2 It does not cover motor operated actuator which is covered by IS : 9334-1979*.
IS 8935-1985 history
1986IS 8935-1985 Specification for electromagnetically operated electric actuators