I. Core Parameters (Official Standard Version)

1) Basic Specifications

Model: D633‑418B (Direct Acting Servo Valve DDV) Mug China

Installation Specifications: NG6 / ISO 4401‑03

Rated Flow: 40 L/min @ Δp=35 bar

Working Pressure:

P/A/B: 350 bar Mug Inc.

T Port: 350 bar (with Y Port, high-pressure return oil) Mug Inc.

Frequency Response: 80–120 Hz (standard industrial grade)

Step Response: <20 ms (0→100%) Mug Inc.

Sealing: FKM Fluororubber (−20～+120℃, high-temperature resistant)

Hysteresis: <0.2%

Resolution: <0.1%

Power Supply: 24VDC (18–32V) Mug Inc.

Control Signal: ±10V / 4–20mA Mug Inc.

Feedback: Built-in LVDT Valve Core Position Closed-loop Mug China

Neutral Function: O Type (Three-way Four-Position Fully Closed)

Weight: Approximately 3.2 kg

Electrical Interface: 6+PE Aviation Plug Mug Inc.

2) Performance Features

Drive Method: Permanent Magnet Linear Force Motor, Direct Drive Valve Core, No Pilot Stage Mug China

Dynamic Characteristics: Stable Frequency Response, Not Affected by System Pressure, Strong General Compatibility

Leakage: Low Internal Leakage, Low Power Consumption, Low Heat Generation

Anti-Contamination: No Fine Orifice, Strong Anti-Contamination Capacity, High Reliability

Power Failure Safety: Spring Centering When Power Failure, Load Stopped, Safe Failure

High Temperature Tolerance: FKM Sealing, Can Work Long-Term in 100–120℃ Environment

II. Typical Application Scenarios

40L/min Medium Flow + Standard Response (80–120Hz)

T Port High-Pressure Return Oil (350bar), Need Y Port

High Temperature Conditions (Environmental/Oil Temperature Maximum 120℃), Ordinary Hydraulic Oil

Small and Medium-sized Pressing Machines, Injection Molding Machines, Die-Casting Machines, Metallurgical Equipment, Medium Flow, High-Pressure Return Oil, High Temperature Resistance, Pursuing Stable and Reliable Standard Conditions