A cartrdige style, screw-in, spool type, normally closed, hydraulic directional element. An orifice through the spool connects port 1 to port 3, which allows remote control of the valve by connecting port 3 to a pressure control or a solenoid valve. The flow from 1 to 2 is allowed only when 3 is vented to create a pressure drop across the internal orifice which exceeds the pressure value of the selected bias spring force. These valves can be used as unloading valves or in pressure control and bypass circuits. Available version with cleaning wire to preserve cleanliness of the orifice.