DIRECT DRIVE ANALOG CONTROL SERVO VALVES

HIGH PRODUCTIVITY FOR DEMANDING APPLICATIONS THAT REQUIRE A HIGHLY DYNAMIC RESPONSE AND FLEXIBLE INTEGRATION.

D634 SIZE 05 D633 SIZE 03

Whenever the highest levels of motion control performance and design flexibility are required, you’ll find Moog expertise at work. Through collaboration, creativity and world-class technological solutions, we help you overcome your toughest engineering obstacles. Enhance your machine’s performance, and help take your thinking further than you ever thought possible.

PRODUCT OVERVIEW The D633 and D634 Series are Direct Drive Valves (DDV) with electric closed loop spool position control. These valves are throttle valves for 3-, 4-, and 2x2-way applications. They are suitable for electrohydraulic position, velocity, pressure or force control systems including those with high dynamic response requirements. The spool drive device is a permanent magnet linear force motor, which can actively stroke the spool from its spring centred position in both directions. This is an advantage compared with proportional solenoids with one force direction only. The closed loop spool position control and pulse width modulated (PWM) drive electronics are integrated into the valve. The integrated electronics of the valves features SMD technology with pulse width modulated (PWM) current output stage, and requires a 24 VDC power supply.