This electrical connection has 4 wires. Red, Black, Green, Yellow

Operating Voltage for the valve is 220V AC

Red and Black to connected to Phase and Neutral 220V AC

Green and Blue wires to be connected to the Switch for opening and closing the valve.

220V AC lines to be always connected. 

Note: When the power is cut the valve stays in the last position. 

When the switch contact is closed. Valve will be opened. 

When the switch contact is opened. Valve will be closed.