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Woodward 9907-1320 VariStroke I Electro-Hydraulic Actuator
Product Name: Woodward 9907-1320 VariStroke I Electro-Hydraulic Actuator (V45TD-2025-MUR)
Product Description: An integrated, double-acting electro-hydraulic linear actuator designed for direct operation of steam turbine control valves. It features a self-contained design using low-pressure turbine lube oil and patented dirt-tolerant technology for maximum reliability.
Detailed content
Technical SpecificationsWoodward:
- Actuator Type: Integrated, double-acting
- Bore Size: 200 mm
- Stroke Length: 250 mm
- Output Force: Up to 22,000 N (5000 lbf)
- Supply Pressure: 4–10 bar (58–145 psi) (turbine lube oil)
- Input Signal: 4–20 mA
- Fail-Safe Mode: Fail-retract
- Shaft: Male-threaded
- Operating Temperature: -40°C to +85°C
- Certifications: ATEX, CE
Functional FeaturesWoodward:
- Patented dirt-tolerant and self-cleaning spool valve
- Utilizes low-pressure turbine lube oil (no separate power pack needed)
- Integrated LVDT position feedback (high resolution)
- Direct-stroke, no linkages required for high accuracy
- Fail-retract action for safe turbine shutdown
- Universal mounting for easy installation
- Configurable and calibratable via PC service tool
ApplicationsWoodward:
- Large steam turbine control valves (inlet, intercept, stop)
- Utility and industrial power generation turbines
- Mechanical drive steam turbines
- Retrofit for legacy actuator systems
- High-reliability turbine control applications
