The Installing procedure of valve operator

The Installing procedure of valve operator
First check whether the inner hole of worm gear, the keyway and the flange of the housing in according with the stem, key and the mounting flange plate of the valve body. Install the device on the valve after check correctly. The needle of the indicator can point the position of the operator in the CLOSE and OPEN by rotating the hand wheel and adjust the limit stop screw. When install valve operator, please turn the indicator board of this device and the valve to be the CLOSE position in order to keep them harmonized.