Product Introduction: Part of Moog’s D661 series, this servo valve combines a pilot-operated main stage with advanced integrated electronics for enhanced control capabilities. It is designed to handle high flow rates while maintaining precise regulation, making it ideal for large-scale industrial systems. The integrated electronics eliminate the need for external amplifiers, simplifying system design and reducing installation complexity.
Technical Specifications: Rated flow ranges from 50 to 200 l/min (13.2 to 52.8 gpm) at 35 bar (500 psi) pressure drop. Maximum operating pressure is 350 bar (5000 psi). The valve accepts standard control signals (4-20 mA, ±10 V) and features a 24 VDC power supply. Response time for 100% step input is ≤10 ms, ensuring rapid system adjustment. Compliance with ISO 4401 size 05 standards facilitates interchangeability with other valves.
Functional Features: Integrated closed-loop position control of the main spool via a linear variable differential transformer (LVDT) ensures high accuracy. Advanced diagnostics monitor valve performance, providing real-time data on spool position and coil current. Multiple fail-safe options (spring return to center, open, or closed) enhance system safety during power loss. Low hysteresis (<1%) and high repeatability minimize control errors.
Application Scenarios: Critical in steel mill hydraulic systems, controlling roller position and pressure to maintain precise sheet metal thickness. Used in large injection molding machines for high-volume production, regulating clamp force and injection velocity. Applied in marine hydraulic systems, controlling rudder actuation and thruster output to ensure vessel maneuverability.
