The Moog D684Z4921 is a high-performance proportional directional control valve from the D680 series, featuring integrated digital electronics. This valve is designed for 4-way hydraulic applications requiring precise and dynamic control of position, velocity, or force. Equipped with an EtherCAT fieldbus interface, it allows for seamless integration into modern industrial automation systems. Its robust design ensures reliability and a long service life even in demanding environments such as metal forming, plastics machinery, and test applications. The onboard electronics provide advanced control capabilities, diagnostics, and easy parameterization for optimal performance.