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Woodward 8915-866
Product Name: Woodward 8915-866 — 1907 Small Gas Valve
Product Description: The 8915-866 is a Woodward 1907 Small Gas Valve, a compact fuel metering valve designed for small gas turbine gas fuel control applications.
Product Description Detail: This valve belongs to the Woodward 1907 series of fuel metering valves. The “Small Gas” configuration is optimized for lower flow gas fuel applications compared to the Large Liquid Valve variant.
Detailed content
Application Scenarios: Small industrial gas turbines, auxiliary power units, and gas fuel metering applications requiring compact valve solutions.
Material Composition: Stainless steel precision cast valve body; fully hardened stainless steel metering sleeve and gate; FKM or fuel-compatible elastomeric seals.
Structural Characteristics: Rotary sleeve and gate metering structure with excellent flow resistance characteristics; compact design for turbine compartment installation.
Working Principle: The valve meters gas fuel through a rotary sleeve and gate mechanism. Position feedback is provided via resolver directly coupled to the metering sleeve, enabling high-precision closed-loop control.
Installation Requirements:
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Care must be taken during handling and installation to avoid damaging seals, mounting faces, and factory adjustments
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Gas connection ports must be protected with plastic caps or covers when not connected to formal piping
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Execute precise alignment using locating pins between actuator and valve adapter
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Tighten actuator mounting bolts and coupling set screws to specified torque values
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Configure 25 μm absolute accuracy filter at gas inlet
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Use conduit interfaces for electrical connections; seal unused interfaces with explosion-proof plugs
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Employ shielded cable for actuator and resolver wiring with proper grounding
Usage Precautions:
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Gas cleanliness is critical to valve life; inspect and replace filters regularly
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Solid particle diameter less than 10 μm: concentration not exceeding 30 ppm; greater than 10 μm: not exceeding 0.3 ppm
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Regularly inspect electrical connector sealing and position feedback signal stability
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Avoid operation under overpressure, overtemperature, or voltage conditions outside the rated range
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Monitor actuator housing temperature regularly to ensure adequate heat dissipation
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Replace actuator without re-calibrating the valve because the resolver is mounted directly on the valve metering sleeve
