Moog Servo Valve with Closed Loop Control Direct Acting and 45mm Shaft Length for Precise Electro-Hydraulic Proportional Flow Control

A MOOG Electro-Hydraulic Servo Valve is an electro-hydraulic conversion and power amplification component. Its primary function is to receive analog electrical control signals and then proportionally adjust the output flow and pressure of hydraulic fluid based on these signals, thereby achieving precise control of hydraulic actuators. Essentially, it converts tiny electrical signals into high-power hydraulic output, making it a core component in electro-hydraulic servo systems.

Most MOOG servo valves are two-stage valves. In the first stage, an electrical signal is sent to a torque motor, which moves a flapper between two nozzles, creating a pressure differential. This pressure difference acts on a spool (the second stage), moving it to control the main hydraulic flow to the load. The valve may use mechanical feedback (e.g., a spring) or an electrical feedback system (LVDT sensor) to ensure the spool position accurately corresponds to the input command signal.

• High-Precision Control: They offer exceptional control accuracy, which can reach about 0.1%, suitable for demanding applications.
• High Dynamic Performance: They feature fast response times, often in the millisecond range, allowing for high-speed and high-precision control.
• High Reliability and Stability: Designed with advanced technology and materials for stable long-term operation, even in harsh environments.
• Variety of Designs: Available in various series, including standard two-stage, high-performance two-stage and three-stage, and direct-drive valves (DDV) to meet different performance needs.
• Fail-Safe Functionality: Some models include a fail-safe feature that moves the valve to a safe position in case of a power failure or system fault.