Product Details:

MOOG D633-204 belongs to MOOG D633 series direct drive servo valve, adopting permanent magnet linear force motor structure without pilot oil supply. It integrates built-in electronic drive and spool position closed-loop feedback, accepts analog command signals to adjust hydraulic flow accurately. The linear force motor directly drives the valve spool, providing pressure-independent dynamic response and low power consumption at hydraulic null position. The spool will return to spring-centered position once power supply fails to protect hydraulic equipment.

This servo valve features high resolution, low hysteresis and stable repeatability. MOOG D633-204 direct drive servo valve is widely applied in static and dynamic material fatigue testing machines, aerospace hydraulic simulation benches, metal forming presses and automated hydraulic production equipment. It can precisely control position, velocity and force of hydraulic actuators for high performance closed-loop hydraulic systems.

The internal filter design reduces contamination sensitivity. Every MOOG D633-204 flow regulator undergoes complete factory performance tests before shipment, including flow characteristic curve test, frequency response test and internal leakage inspection. Strict quality control ensures stable and repeatable precision for closed-loop hydraulic control applications.

Specifications:

Brand: MOOG

Model: D633-204

Product category: Direct drive electro-hydraulic servo valve

Drive principle: Permanent magnet linear force motor, integrated spool position closed loop control

Mounting standard: ISO4401 size 03

Max working pressure: 350 bar for P/A/B ports

Feature: No pilot oil required, fast dynamic response, low hysteresis, power-off spring centred

Application: High precision closed-loop hydraulic system, material test machine, metal forming press, aerospace test bench

Working medium: Fully filtered industrial hydraulic oil

Working environment: Industrial site with vibration and temperature variation