Product Details:

MOOG D633-183B belongs to MOOG D633 series direct drive servo valve, adopting linear force motor design without pilot oil supply requirement. B suffix stands for revised upgraded internal assembly version. Integrated closed loop spool position electronics and PWM drive circuit, which can receive analog control signal directly. The linear force motor drives the spool to adjust hydraulic flow, realizing high precision control of position, speed and force for hydraulic actuators. Spool returns to spring centred position when power is cut off for equipment safety protection.

This valve has stable dynamic performance not affected by working pressure, low power consumption at hydraulic null and near null position. MOOG D633-183B direct drive servo valve is widely used in static and dynamic material fatigue testing machines, aerospace hydraulic simulation benches, metal forming equipment and automated manufacturing machinery.

The internal filter structure reduces contamination sensitivity. Every MOOG D633-183B 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: D633-183B

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