Parker Hannifin launched a new series of pilot-operated servo proportional valves, featuring Voice Coil Drive (VCD) technology, improving the performance and productivity of hydraulic systems. The VCD technology controls the high forces within hydraulic valves. The high dynamics and precision of these pilot valves delivers optimum control of the main spool, resulting in servo class performance from the complete valve. The control behavior of the valves ensures high stability in operation and easy, time-saving installation and set-up. A new safety concept reduces the need for additional shut-off valves in hydraulics systems.