Overview
The MOOG S20FOFM4VBR 191R 3000PSI servo valve is a high-performance electro-hydraulic proportional control component designed for precision positioning and flow regulation in industrial hydraulic applications. MOOG’s servo valves represent the classic design known as the ultimate choice for performance and reliability since 1951. This two-stage servo valve combines closed loop spool position control and mechanical feedback for accurate, repeatable control of hydraulic actuators and motors in process automation, machine tools, and manufacturing equipment.
Key Features
- 3000 PSI maximum operating pressure rating for high-pressure applications
- Two-stage proportional design with mechanical feedback spool control
- Compact footprint suitable for integration into existing hydraulic manifolds
- Analog input signal interface for proportional valve operation
- Precision spool-in-bushing construction for reliable seal integrity
- Suitable for servo proportional flow control in precision motion systems
Technical Specifications
Based on MOOG’s servo valve series design standards:
Typical Applications
Servo and proportional valves are used in industrial applications to control the position, force or speed of an actuator. The MOOG S20FOFM4VBR is well-suited for:
- Precision machine tool servo axes (vertical mills, lathes, machining centers)
- Industrial robotic arm joint actuation and load control
- Automated injection molding and plastic processing equipment
- Aerospace ground support equipment and test stands
- Material handling systems requiring proportional flow control
- Printing press registration and tension control systems
Compatibility & Replacements
Compatible With
- Hydraulic pump systems rated for 3000 PSI operation
- Proportional amplifier modules with analog proportional command signals
- Double-acting and single-acting hydraulic cylinders
- Fixed and variable displacement hydraulic motors
- Industrial hydraulic manifold systems and cavity designs
- Standard SAE subplate and NG10 flange mounting configurations
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. MOOG servo valve part numbers and configurations vary by application. Original part specifications should be cross-referenced with MOOG’s current product documentation to confirm direct replacement eligibility.
Works With
- Proportional amplifier electronics with ±10V or 4–20 mA analog signals
- Proportional spool position feedback transducers (LVDT position sensors)
- Industrial control systems and hydraulic motion controllers
- Machine tool CNC systems with hydraulic servo axis control
- Custom proportional hydraulic manifold assemblies
