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Phone：+86 17062388866Description
The WOODWARD 9907-167 is a high-torque electrohydraulic fuel actuator engineered for precision control of gas turbines, steam turbines, and large diesel engines in mission-critical power generation and mechanical drive systems. Designed for seamless integration with Woodward’s 5000/8000 series governors, this ruggedized actuator delivers ±0.05% positioning accuracy with 50,000N thrust capacity for rapid fuel valve modulation. The 9907-167 features dual-redundant LVDT feedback and SIL 3-certified fail-safe springs, ensuring immediate return to safe position (<200ms>
WOODWARD 9907-167
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 9907-167 (Common Rev. 9907-167-XXX) |
| Manufacturer | Woodward |
| Product Type | Electrohydraulic Servo Actuator |
| Rated Force | 50,000 N (11,240 lbf) |
| Stroke Length | 150 mm (±75mm) |
| Positioning Accuracy | ±0.05% FS |
| Linearity | <0> |
| Pressure Rating | 210 bar (3,000 psi) |
| Feedback | Dual-redundant LVDT (0.02% resolution) |
| Fail-Safe Action | Spring return (SIL 3 compliant) |
| Response Time | 100 ms (0-100% stroke) |
| Operating Temp | -50°C to +120°C (fluid) |
| Housing Material | 316L Stainless Steel |
| Protection Rating | IP66/IP69K (NEMA 4X/6P) |
| Weight | 38 kg |
Main Features and Advantages
Ultra-Precise Control:
Adaptive Friction Compensation: Self-adjusting algorithms counteract stiction in extreme temperatures
Dual-Loop Feedback: Cross-validated LVDTs detect position discrepancies >0.1mm
Hydraulic Damping Control: Adjustable cushioning eliminates overshoot during rapid stroke reversals
Safety-Critical Design:
Certified Fail-Safe: TÜV-certified spring pack returns to pre-defined safe position (0/50/100%) in <200ms>
Leak-Free Integrity: Welded metal bellows seal prevents hydraulic fluid contamination (API 614 compliant)
Fire-Resistant: Continuous operation at +400°C surface temp for 30 minutes (ISO 2685)
Extreme Environment Resilience:
Corrosion Defense: Nitronic 60 stem material resists H₂S/sour gas (NACE MR0175)
Vibration Tolerance: 15g operational shock resistance (IEC 60068-2-27)
Zero Maintenance: Lifetime-lubricated bearings with 100,000-hour design life
Application Field
The 9907-167 dominates critical fuel control scenarios:
Gas Turbines: Modulates fuel valves during load rejection with ±0.5% flow accuracy
LNG Plants: Controls cryogenic fuel valves (-162°C) for turbine-driven refrigerant compressors
Offshore Platforms: SIL 3-compliant actuator for FPSO power generation in Zone 1
Hydrogen Turbines: Hydrogen-compatible seals for decarbonized power projects
Diesel Backup: Manages rack position in black-start generators (IEEE 387)
Pipeline Compression: Throttles gas injection valves during surge events
WOODWARD 9907-167
Related Products
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2301A-100: Legacy actuator retrofit adapter
TK-8590: SIL validation test kit
Hydraulic Power Unit (HPU-167): Dedicated 210-bar fluid supply system
