D633-362B
May 18, 2026

D633-362B

1. Model Disassembly: D633-362B D633 NG6 (ISO 4401-03) Direct Acting Servo Valve (DDV) Permanent magnet linear force motor, integrated electronics, valve core position closed-loop 3 6 2 (Hydraulic / Performance Three-position Code) 3: Flow → 75 L/min @ Δp=35 bar (Maximum flow rate of D633) 6: Electronics / Frequency Response / Feedback → High frequency response 120–150 Hz → Analog ±10V / 4–20mA → Built-in LVDT valve core position closed-loop 2: Y port / Return oil + Seal → With Y port, T port 350 bar high-pressure return oil → NBR seal, -20 to +80°C (Standard industrial) B: Version Code B = With Y port + NBR seal + High frequency + 24VDC standard voltage In one sentence: D633-362B = NG6 + 75L/min + 350bar full port high-pressure (including T port) + High frequency 120–150Hz + NBR standard seal

Description

II. Core Parameters (Basic Version)

Installation: NG6 (ISO 4401-03)

Flow Rate: 75 L/min @ Δp = 35 bar

Pressure: P/A/B/T = 350 bar (full-mouth high pressure, with Y port)

Frequency Response: 120–150 Hz (high-frequency mode)

Sealing: NBR (−20 to +80°C)

Hysteresis: <0.2%

Resolution: <0.1%

Drive: 24VDC, ±10V/4–20mA

Feedback: Built-in LVDT valve core position closed-loop

Neutral Position: Standard O-ring

III. D633-362B vs D633-362A (Most Critical) Table

Project D633-362B D633-362A

Flow rate 75 L/min 75 L/min

Frequency response 120–150 Hz (high frequency) 120–150 Hz (high frequency)

Y port / T port Has Y port, 350bar Has Y port, 350bar

Sealing material NBR (−20 to +80°C) HNBR (−30 to +100°C)

Suffix B A

Conclusion: 362B = 362A's "standard temperature / standard seal" version; 362A is an upgraded model for high temperature / oil-resistant.

Four. Compared with your previous D633-333B (quick review)

333B: Standard frequency response 60–90Hz, no Y port, T port ≤ 50bar, NBR

362B: High frequency 120–150Hz, has Y port, T port = 350bar, NBR

Sentence: 362B is the "high frequency + high pressure return oil" upgraded version of 333B.

Five. Typical applications

75L/min high flow rate + high frequency response (120–150Hz)

High-pressure return oil at T port (350bar), must have Y port

Normal temperature (−20 to +80°C), ordinary hydraulic oil (NBR is sufficient)

High-speed presses, dynamic test benches, vibration tables, die-casting machines, high frequency + high flow rate + high pressure return oil precision system


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