1) Verify that the piping and valves have been rinsed before operation. 2) Valve operation according to the actuator input signal size to drive stem rotation completed: The positive rotation of 1/4 laps (90°), the valve shut off.

The valve is turned on with a reverse rotation of 1/4 laps (90°).

 3) When the actuator direction arrow is parallel to the pipeline, the valve is open and the valve is off when the arrow is perpendicular to the pipeline.