The Moog D661-4731, part of the D660 series, is a high-performance proportional servo valve designed for demanding industrial applications. This 2-stage valve features integrated digital electronics and a direct-drive pilot stage, ensuring exceptional dynamic response, high resolution, and low hysteresis. Its robust construction and onboard diagnostics make it ideal for closed-loop control systems requiring precise regulation of position, velocity, pressure, or force. The integrated EtherCAT fieldbus interface allows for seamless integration into modern, networked automation systems, providing real-time communication and control.