Woodward 8917-010
Product Name: Model 1907 Large Liquid Fuel Valve (Specific Configuration Version)
Product Introduction: This model belongs to the Woodward 1907 series large liquid fuel valve family, designed for precise liquid fuel metering in industrial gas turbines. It features a rotary sleeve metering structure with the sleeve driven by an external actuator through a lever mechanism, and integrates a bypass valve and differential pressure regulator to maintain constant differential pressure across the metering port.
Detailed content
Technical Specifications:
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Same platform specifications as the 1907 series: rated metering differential pressure of 345 to 827 kPa (50 to 120 psig), flow turn-down ratio of 30:1
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Minimum fuel flow: 68 kg/h (150 lb/h)
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Maximum metering fuel flow: 11340 kg/h (25000 lb/h)
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Fuel filtration accuracy: 20 microns or finer
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Fuel water content limit: 0.1% by volume
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Operating temperature range: -28 °C to +103 °C
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(Note: Specific maximum inlet/outlet pressure values for this exact configuration should be verified against the individual valve’s nameplate data.)
Functional Features:
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Rotary sleeve metering structure driven by external actuator via lever mechanism
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Built-in differential pressure regulator for constant differential pressure maintenance
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Optional LVDT position feedback for closed-loop electronic control
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Compatible with positive displacement fuel pumps
Application Scenarios: Suitable for liquid fuel industrial gas turbines in power generation, mechanical drive, and marine propulsion systems.
Performance Parameters: Valve stroke time from full open to full close is less than 100 ms; shut-off response time is less than 100 ms. Metering accuracy is ±5% of actual flow or ±0.5% of maximum rated flow.
Material Composition: Valve body is available in aluminum alloy or stainless steel; internal wetted parts use corrosion-resistant materials; sealing components use fluorocarbon rubber (FKM).
Structural Features: Rotary sleeve metering structure; metering sleeve driven by external actuator through lever mechanism. Valve body integrates bypass valve and differential pressure regulator. Fuel connections use MS33786-20 standard interfaces, with optional overboard drain interface.
Working Principle: Fuel enters the valve body from the inlet, is precisely regulated by the metering port, and delivered to the gas turbine combustion chamber; the excess returns to the tank through the bypass valve. The built-in differential pressure regulator automatically adjusts the bypass valve opening through a bellows and spring mechanism, maintaining a constant differential pressure across the metering port. When the actuator adjusts the metering sleeve angle, the effective flow area of the metering port changes, achieving precise flow control under constant differential pressure.
Installation Requirements:
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Must be used with a positive displacement fuel pump; not applicable to other pump types
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Valve body must be fixed to a rigid foundation; installation orientation should facilitate maintenance
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The overboard drain port must be connected to a fuel collection, purge, vent, or flare system, with back pressure not exceeding 69 kPa (10 psig)
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Strictly prohibit blocking the overboard drain port to prevent fuel from entering the actuator and causing hazards
Usage Precautions:
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Fuel must be filtered to 20 microns or finer, with water content controlled within 0.1% by volume
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Periodically inspect the leakage at the overboard drain port; exceeding 20 cm³/min indicates shaft seal wear requiring immediate repair
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Shaft seal replacement requires special tools; it is recommended to contact Woodward for service
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Before first start-up after prolonged shutdown, check valve flexibility and actuator calibration status












