The solenoid valve (s) is (are) intended for installation in the pressure oil circuit to the automatic emergency trip gear (trip-oil), and to the emergency stop valve (s) (starting oil). When operated, they will interrupt the oil flow in these lines. At the same time, the trip-oil circuit and the starting oil circuit will be connected to the oil drain whereby emergency tripping is released. The solenoid valves are remote controlled electrically, i.e. they can be operated either from the control room or by a protection device. For details of manufacture and operation features of the solenoid valves see the manufacturer’s instruction in the “Instrumentation” volume.