D671 and D672 Series Servo Valves are used to control position, velocity, pressure, or force. This series has very good static and dynamic properties and is ideal for high performance machine applications.

Moog servo valves feature a spool sliding in a bushing offering better accuracy, compared to a spool sliding within a cast-iron body. The advantages of this design are:

• The highest precision positioning and control due to expert design and manufacture of the spool lands and slots
• Customer specific flow characteristics due to the availability of a tailored design geometry of slots in the bushing

The D671 Series Servo Valves in size 05 are a 2-stage design with a ServoJet® Pilot Stage. Two pilot stage versions with different flows are offered to meet different dynamic requirements.

• The ServoJet® Standard meets typical requirements and offers lower leakage flow.
• The ServoJet® High Flow provides higher dynamic response.

The D672 Series Servo Valves in size 07 are a 3-stage design with the 2-Stage ServoJet® Pilot Valve D670. The 3-stage design offers the highest dynamic response and provides a stable spool control even for the most demanding applications.

This valve series features digital on-board electronics offering the user high flexibility, and an embedded microprocessor enabling very fast processing speeds. The Moog Valve Configuration Software is used to easily tune the valve performance, change parameters, and perform diagnostics, all through a service connector.

The valves have an optional fieldbus interface to operate and monitor the valves and set parameters. Common fieldbus technologies like CANopen, Profibus-DP or EtherCAT are supported by Moog‘s hardware and software. Other options are available upon request.

D671 and D672 Series Servo Valves offer high productivity for demanding applications requiring highly dynamic response, flexible integration, and advanced maintenance.