I. Basic Information

Series: D630 (Direct Drive DDV, without pilot stage)

Structure: Permanent magnet linear force motor + Direct Drive Valve Core + Built-in LVDT Position Feedback + Integrated Amplifier

Function: 4-way, zero opening, flow loop closed

Electrical: 24 VDC power supply, ±10 V / 4–20 mA control

Installation: ISO 4401-03 standard installation surface

Features: G type = High pressure / High performance version, enhanced sealing and anti-vibration

II. Core Parameters (Typical Values)

Rated Flow: 83 L/min (Δp=35 bar / each side)

Maximum Working Pressure: 350 bar (5,000 psi)

Frequency Response (-3 dB): ≥140 Hz

Hysteresis: ≤1.0% (closed loop)

Resolution: ≤0.1%

Repeatability Precision: ≤0.5%

Internal Leakage: ≈1.5 L/min (zero position)

Temperature Range: Ambient -20 ℃ ~ +60 ℃; Oil -20 ℃ ~ +80 ℃

Anti-pollution: Extremely high (without pilot holes)

Protection / Anti-vibration: IP65; 30g three-axis vibration, 50g impact

III. Model Meaning

D630: Direct Drive Force Motor Servo Valve Series (DDV)

083: Rated Flow 83 L/min (Δp=35 bar)

G: High pressure / High performance configuration (sealing, materials, anti-vibration enhancement)

IV. Key Features

Direct Drive without Pilot: Force motor direct drive valve core, no pilot leakage, strong anti-pollution, long lifespan

Fully Integrated Closed Loop: Built-in LVDT + amplifier, directly connected to PLC, no need for external amplification board

High Flow and High Pressure: 83 L/min, 350 bar, suitable for high power, high-pressure precise control

G Type Enhancement: Higher anti-vibration, lower internal leakage, wider temperature adaptability

V. Typical Applications

Large-scale structural fatigue test bench, multi-channel loading system

High-pressure hydraulic vibration table, heavy-duty servo actuator

Metallurgical high-pressure roll gap control, thick plate / special steel tension control

Hydraulic power positioning for ships / marine engineering, heavy-duty actuators

Industrial high-pressure precise synchronous lifting, force control system