Model Code Decoding

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

• 313:

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

  • 1: Max pressure 350 bar (P/A/B ports).

  • 3: 4-way spool, linear, zero overlap, spring-centered, high-pressure seal variant.

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

Technical Specifications

• Part Number: D636-313-0001

• 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%)Moog Inc..

• Max Flow: 55 L/minMoog Inc..

• Operating Pressure:

  • P/A/B ports: 350 bar.

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

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

• Hysteresis: <0.1%.

• Linearity: <0.3%.

• Electrical:

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

  • Command: ±10 V (std).

  • Feedback: LVDT (spool position, internal).

  • Protection: IP65 (mated connector).

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

• Temperature:

  • Ambient: −20°C to +60°C.

  • Fluid: −20°C to +80°C.

• Mass: ~2.5 kg.

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

Interface & Communication Configuration

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

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

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

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

Core Functions

1. 350 Bar High Pressure: For high-pressure industrial hydraulic systems.

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

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

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

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

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

Application Scenarios

• High-Pressure Industrial Automation: High-precision positioning, velocity control.

• Test Benches: Fatigue, vibration, and component durability testing.

• Machine Tools: High-speed, accurate hydraulic actuators.

• Plastics Machinery: Injection molding, extrusion control.

• General Hydraulics: High-pressure, dynamic flow control systems.

Compatibility & Differences

• Base Model: D636-313-0001 = analog 30 L/min/350 bar 4-way valve.

• vs D636-312-0001: 312 = 210 bar; 313 = 350 bar (higher pressure rating).

• vs D636-225-0000: 225 = 20 L/min / 350 bar; 313 = 30 L/min / 350 bar.

• vs D637-313-0001: D637 = NG10 (Size 05), higher flow (60–100 L/min)Moog Inc.。