Sterling Hydraulics claims its new N04 series of four-port three-way directional valves are capable of switching high flows of up to 85 litre/min. In a standard aluminium line body the valves can operate at up to 210bar, and a zinc plated steel version is available for pressures up to 420bar. Both are 10-4 industry common cavity compliant. The N04 range can be combined in many ways either into a manifold with other valves to form a complete hydraulic circuit. One possibility is to use two N04 valves and a solenoid valve in combination to make an electrically operated six-port diverter valve.