1) Make sure the lines and valves have been flushed before operation.
2) The operation of the valve is driven by the actuator input signal size to complete the rotation of the valve stem: when the forward rotation is 1/4 turn (90°), the valve is closed. The valve opens when rotated 1/4 turn (90°) in the opposite direction.
3) When the actuator direction indicator arrow is parallel to the pipeline, the valve is open; when the indicator arrow is perpendicular to the pipeline, the valve is closed.
