I. Basic Information

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

Model: D630-072A

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

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

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

Installation: ISO 4401-03 (Size 03) installation surface

Status: In service, standard supply

II. Core Parameters (Typical Values)

Rated Flow: 72 L/min (Δp=35 bar / each side)

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

Frequency Response (-3 dB): ≥150 Hz

Hysteresis: ≤1.0% (closed-loop)

Resolution: ≤0.1%

Repeatability: ≤0.5%

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

Anti-pollution: Extremely high (no pilot holes, direct drive structure)

III. Model Meaning

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

072: Rated Flow 72 L/min (Δp=35 bar)

A: Valve Core / Electrical / Sealing Configuration Code

IV. Key Features

Direct Drive without Pilot: Force motor directly drives the 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

Large Flow High Response: 72 L/min medium-large flow, high frequency response, suitable for medium-high frequency, medium-large power precise control

Low Hysteresis High Resolution: Good closed-loop accuracy, suitable for precise force control / position synchronization

V. Typical Applications

Large fatigue test bench, structural mechanics loading system

Hydraulic vibration table, multi-degree-of-freedom motion platform

Injection molding / die-casting large flow precise pressure / flow control

Large-scale roll gap, tension, thickness control in metallurgy

Industrial hydraulic servo actuator, synchronous lifting system