The Hydraulic Shut Off Valve (SOV) is an electric operated ball valve that enables or disables oil flow as a function of the commanded configuration.

In normal configuration the ball valve is open. Shut-Off Valve cuts the oil supply to the pump in case of activation with an external closing command.

When the SOV reaches its OPEN/CLOSE position, a dedicated End-Stroke Switch gives in output the valve position signal to the cockpit.