1. Basic Identification

• Model: D633-632

• Brand: MOOG

• Category: Direct Drive Electro-Hydraulic Servo Valve

• Alias: DDV Servo Valve, Integrated Electronic Servo Valve

• Code Explanation

  D633: Size 03 direct drive servo valve series

  632: Flow and internal structure configuration code

2. Basic Information

• Structure: Permanent magnet linear force motor drive, pilotless design, built-in closed-loop electronic control

• Mounting Standard: ISO 4401-03-03-0-94

• Weight: Approximately 2.5 kg

• Protection Level: IP67 connector, IP65 valve body

• Ambient Temp: -20℃ ~ +60℃

• Fluid Temp: -20℃ ~ +70℃

• Applicable Fluid: Mineral hydraulic oil

3. Function & Positioning

• Core Function: 4/3-way directional, velocity, pressure and force proportional closed-loop control

• Positioning: High precision & fast response core control part for industrial hydraulic system

• Advantages: Stable dynamic performance, automatic spring centering after power cut, low hysteresis, strong anti-pollution capacity

4. Core Performance Parameters

• Rated Flow: 40 L/min

• Maximum Working Pressure: 350 bar (P/A/B), 50 bar (T port)

• Supply Voltage: 24 VDC

• Control Signal: ±10 V, ±10 mA, 4-20 mA

• Feedback Signal: 4-20 mA

• Max Current Draw: ≤1.2 A

• Hysteresis: ≤0.2%

• Response Time: ≤12 ms

5. Compatible Accessories

• Grade 10.9 M5 mounting bolts

• Standard sealing assembly

• 5-core shielded cable

• 10μm high pressure hydraulic filter

• M12 waterproof connector

6. Applicable Fields & Equipment