Model Code Decoding

• D634: Series, ISO 4401‑05 (NG10) size

• Z: High‑flow 4‑way (enhanced flow paths)

• 36: Rated flow 210 L/min (Δp=35 bar/land)

• 0: Spool/bushing type (4‑way, linear, standard overlap, industrial general‑purpose)

• C: Revision C (industrial standard, FPM seals, enhanced EMC)

Technical Specifications

• Part Number: D634Z360C

• Valve Size: ISO 4401‑05 (Size 05 / NG10)

• Control Function: 4‑way flow control, spring‑centered

• Rated Flow (Δp=35 bar/land): 210 L/min (±10% tolerance)Moog Inc.

• Max Flow: 230 L/min

• Operating Pressure:

  • P/A/B ports: 350 bar (5,000 psi)Moog Inc.

  • T port (without Y): 50 barMoog Inc.

  • Y port: Not available (C version only)

• Response Time (0→100% step): ≤22 msMoog Inc.

• Hysteresis: <0.2%Moog Inc.

• Null Shift (ΔT=55 K): <1.5%Moog Inc.

• Electrical:

  • Supply: 24 VDC (18–32 VDC), 3.0 A maxMoog Inc.

  • Signal: ±10 V, ±10 mA, or 4–20 mA

  • Connector: 6+PE (EN 175201), IP65 (mated)Moog Inc.

• Fluid: Mineral oil (DIN 51524), viscosity 15–100 mm²/s

• Temperature:

  • Ambient: −20°C to +60°CMoog Inc.

  • Fluid: −20°C to +85°C

• Mass: ~8.5 kg

• Seals: FPM (Viton, high‑temp resistant)

Interface & Communication Configuration

• Electrical Interface: Analog command (±10 V / ±10 mA / 4–20 mA) + 24 VDC power

• Feedback: Integrated spool position sensor (closed‑loop); optional 2–10 V actual‑value output

• Mounting: 4‑bolt ISO 4401‑05 (M6 screws, 11–13 Nm torque)Moog Inc.

• Porting: P, A, B, T (no Y port)Moog Inc.

Core Functions

1. 210 L/min Ultra‑High‑Flow: For extra‑large‑bore actuators, heavy‑duty presses

2. Direct‑Drive Linear Motor: No pilot flow, pressure‑independent dynamics

3. Integrated Closed‑Loop: Onboard spool feedback for high accuracy

4. Standard 0‑Spool: Balanced overlap, good linearity, cost‑effective

5. Revision C: FPM seals, enhanced EMC, industrial temp range

6. Fail‑Safe Spring Center: Spool centers on power loss

7. High‑Flow Stability: Optimized flow paths for minimal turbulence at max flow

Application Scenarios

• Heavy Industrial Machinery: Large injection molding, die‑casting, metal forming presses (200+ L/min demand)

• Large Test Systems: High‑force vibration test benches, full‑scale structural simulators

• Hydraulic Actuation: Precision control of extra‑large‑bore hydraulic cylinders

• High‑Flow Process: Hydraulic circuits requiring continuous high‑volume flow

Compatibility & Key Differences

• Series Compatibility: Interchangeable with D634Z 160/180 L/min models (same ISO 05 mounting)

• 360C vs 351C/359CY:

  • 351C: 180 L/min, zero overlap, no Y‑port

  • 359CY: 180 L/min, special 9‑spool, Y‑port (210 bar T)

  • 360C: 210 L/min, standard 0‑spool, no Y‑port, highest flow in D634Z series

• Replacement: Drop‑in upgrade for lower‑flow D634K series or pilot‑operated 200+ L/min servo valves