MOOG D634‑319C Electro‑Hydraulic Direct‑Drive Servo Valve

📌 Product Overview

The MOOG D634‑319C is a high‑performance 4‑way direct‑drive electro‑hydraulic servo valve (DDV) with integrated closed‑loop electronics and LVDT spool position feedback. It converts analog electrical control signals into precise hydraulic flow and pressure output. It accurately regulates actuator position, velocity, force and pressure for heavy‑duty hydraulic systems. Different from traditional pilot‑operated servo valves, this direct‑drive design requires no pilot oil supply, delivering stable high‑dynamic control independent of working pressure, widely used for high‑accuracy industrial hydraulic motion control systems.

✨ Product Advantages

• ✅ Direct‑drive permanent‑magnet linear force motor, no pilot oil required; dynamic performance not affected by system pressure
• ✅ Integrated LVDT spool closed‑loop feedback: ultra‑low hysteresis＜0.2 %, high resolution＜0.1 %, excellent repeatability
• ✅ Spring‑centered fail‑safe mechanism: spool automatically returns to neutral position upon power loss, stops hydraulic actuator to avoid equipment risk
• ✅ High‑grade IP65 / IP67 protection rating, resistant to dust, splash and harsh workshop environment
• ✅ Standard ISO 4401‑05 (NG10) mounting pattern, convenient for manifold installation and replacement
• ✅ Wide compatible media: mineral hydraulic oil, phosphate ester fire‑resistant hydraulic fluid
• ✅ 24 V DC integrated PWM drive electronics, supports multiple analog input signals: ±10 V, ±10 mA, 4‑20 mA
• ✅ Robust metal valve body, anti‑vibration, long service life for continuous heavy‑load industrial operation
• ✅ CE & EMC compliant, meets European industrial equipment standards

📋 Technical Parameters

🏭 Application Industries & Scenarios

Applicable Industries

• Hydraulic Test & Simulation Equipment
• Metallurgical Rolling Mill Equipment
• Injection Molding & Die‑casting Machinery
• Heavy‑duty Hydraulic Press & Forging Equipment
• Marine Hydraulic Systems
• Material Fatigue Test Benches
• Heavy‑duty Industrial Automation Equipment