1) Make sure that the pipeline and valve have been flushed before operation.
2) The operation of the valve is completed by driving the valve stem to rotate according to the size of the input signal of the actuator: when the valve is rotated 1/4 turn (90°) in the forward direction, the valve is turned off. The valve opens when reversed by 1/4 turn (90°).
3) When the direction indicating arrow of the actuator is parallel to the pipeline, the valve is open; when the indicating arrow is perpendicular to the pipeline, the valve is closed.