Product Introduction: The D633-471B is a high-performance direct-acting servo valve (DDV) designed for applications requiring rapid response and precise control. It features a linear force motor and integrated electronics, eliminating the need for a pilot stage and reducing energy consumption. Its robust construction ensures durability in demanding industrial and aerospace environments.
Technical Specifications: The maximum operating pressure is 350 bar (5,000 psi). The rated flow is 3.8 to 100 l/min (1 to 26.4 gpm) at 70 bar (1,000 psi) pressure drop. The step response time is ≤15 ms, with a frequency response of 60 to 80 Hz. It operates on 24 VDC and accepts ±10 V or 4-20 mA signals. The valve weighs 6.3 kg and features ISO 4401 mounting.
Functional Features: Enhanced dynamic response allows for rapid adjustments to input signals, critical in high-speed applications. Direct drive by a linear force motor ensures high precision, with hysteresis <0.1% and resolution <0.05%. Closed-loop control via an integrated sensor maintains spool position accuracy. The valve’s design resists contamination and vibration, ensuring long-term reliability.
Application Scenarios: Critical in high-speed packaging machinery, controlling conveyor and sealing mechanisms for precise product handling. In automotive testing, it regulates hydraulic actuators in durability test rigs, simulating road conditions. It also controls flight control surfaces in aerospace simulators, providing realistic motion feedback for pilot training.
