Model Code Decoding

• D636: Base series, NG06 (ISO 4401-03) flow control servo valveMoog Inc..

• 312:

  • 3: Rated flow 30 L/min (Δp=35 bar/land).

  • 1: Max pressure 210 bar (P/A/B ports).

  • 2: 4-way spool, linear, zero overlap, spring-centered.

• 0001: Standard analog interface (±10 V), no fieldbus, firmware revision 1.

Technical Specifications

• Part Number: D636-312-0001

• Valve Size: NG06 (ISO 4401-03, Cetop 3)Moog Inc..

• Control Function: 4-way flow control, spring-centered (fail-safe: P→A, B→T on power loss).

• Rated Flow (Δp=35 bar/land): 30 L/min (±10%).

• Max Flow: 55 L/min穆格中国.

• Operating Pressure:

  • P/A/B ports: 210 bar.

  • T port: 50 bar (std) / 350 bar (Y-port option)Moog Inc..

• Step Response (0→100%): ≤8 ms (210 bar).

• Hysteresis: <0.1%Moog Inc..

• Linearity: <0.3%Moog Inc..

• Electrical:

  • Supply: 24 VDC (18–32 VDC), 1.0 A maxMoog Inc..

  • Command: ±10 V (std)Moog Inc..

  • Feedback: LVDT (spool position, internal)Moog Inc..

  • Protection: IP65 (mated connector).

• Fluid: Mineral oil (DIN 51524), viscosity 5–400 mm²/sMoog Inc..

• Temperature:

  • Ambient: −20°C to +60°CMoog Inc..

  • Fluid: −20°C to +80°C.

• Mass: ~2.5 kgMoog Inc..

• Seals: NBR (std) / FPM (Viton, option).

Interface & Communication Configuration

• Electrical Interface: Analog ±10 V command + 24 VDC; no fieldbus (0001)Moog Inc..

• Feedback: Integrated LVDT (closed-loop spool position control)Moog Inc..

• Mounting: 4-hole NG06 (ISO 4401-03), M5 bolts, 8–10 NmMoog Inc..

• Porting: P, A, B, T; Y-port available (high backpressure)Moog Inc..

Core Functions

1. 210 Bar Operating Pressure: For medium-pressure industrial hydraulic systems.

2. 30 L/min Precise Flow: Balanced flow and compact size for medium actuators.

3. Direct-Drive Design: No pilot oil, pressure-independent dynamicsMoog Inc..

4. Integrated Digital Electronics: Onboard closed-loop, no external controllerMoog Inc..

5. Fast Response: ≤8 ms step response, low hysteresis/non-linearity.

6. Fail-Safe Spring Center: Safe position on power loss.

Application Scenarios

• Industrial Automation: High-precision positioning, velocity controlMoog Inc..

• Test Benches: Fatigue, vibration, and component durability testingMoog Inc..

• Machine Tools: High-speed, accurate hydraulic actuatorsMoog Inc..

• Plastics Machinery: Injection molding, extrusion controlMoog Inc..

• General Hydraulics: Medium-pressure, dynamic flow control systemsMoog Inc..

Compatibility & Differences

• Base Model: D636-312-0001 = analog 30 L/min/210 bar 4-way valve.

• vs D636-225-0000: 225 = 20 L/min / 350 bar; 312 = 30 L/min / 210 bar.

• vs D636-405-0001: 405 = 40 L/min, same 210 bar pressure.

• vs D637-312-0001: D637 = NG10 (Size 05), higher flow (60–100 L/min)