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Woodward 8915-721
- Product Name: 3103 Gas Fuel Metering Valve complete with TM55 Electro-Hydraulic Actuator
- Product Introduction: The Woodward 8915-721 is configured as a 3103 gas fuel metering valve with TM55 electro-hydraulic actuator, supplied as a GE gas turbine spare part. It delivers precise, contamination-resistant fuel metering for heavy-duty industrial gas turbines.
Detailed content
- Technical Specifications: Same as 8915-712 — Maximum inlet pressure 45 bar (650 psig); operating temperature –40 to +250 °F (–40 to +121 °C); TM55 slew time 100 ms; time constant 25 ms; flow turndown up to 500:1.
- Functional Features: Self-cleaning rotary sleeve-and-shoe throttling valve; high-force TM55 actuator; through-hardened components for sour gas service.
- Application Scenarios: Heavy-duty gas turbines in the 5000–50,000 hp class; oilfield generator and compressor drives; industrial fuel control systems.
- Performance Parameters: Maintains metering accuracy and dynamic response through a 30,000-hour overhaul interval; minimum flow as low as 50 lb/hr.
- Material Composition: Stainless steel housing; through-hardened stainless steel metering sleeve and seal shoe with hard surface coatings.
- Structural Characteristics: Rotating metering sleeve; spring- and pressure-loaded seal shoe; converging flow path with no dead space; guide tube directs contaminants through the metering port.
- Working Principle: Identical to 8915-712. The TM55 actuator rotates the sleeve to regulate the metering port area, controlling fuel flow under electronic control system demand.
- Installation Requirements: Same as 8915-712. Read the entire 3103 Installation and Operation Manual before starting. Verify hydraulic supply compatibility. Install proper upstream filtration. Confirm correct flow direction.
- Usage Precautions: Same as 8915-712. Operate strictly within published limits. Maintain gas cleanliness. Inspect hydraulic system and electrical connections periodically. Return actuator to Woodward for overhaul at the recommended interval.
