Woodward 8440-1041G High-Flow Proportional Gas Valve

Product Brief Introduction High-capacity proportional gas admission valve for large industrial gas engines, delivering precise high-volume fuel gas flow control for heavy-duty engine governing.
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Technical Specifications Supply: 24 V DC ±10%; control input: 4–20 mA; flow range: 0–85 kg/h natural gas; operating pressure: 0.5–8 bar(g); operating temperature: -30 °C to +115 °C; enclosure: IP65; connection: 2 inch NPT.

Functional Features High flow capacity; proportional flow control; near-linear flow characteristic; fast response; zero shutoff; heavy-duty construction.

Application Scenarios Large industrial gas engines, high-output generator sets, heavy-duty cogeneration plants, pipeline compression engines, large-bore gas engines.

Performance Parameters Flow linearity: ±3% FS; repeatability: ±1.5% FS; response time: < 25 ms; leakage: < 0.5% FS.

Material Composition Cast aluminum valve body; stainless steel plunger and seat; FKM seals; high-force solenoid coil; heavy-duty return spring.

Structural Characteristics In-line high-flow body; top-mounted heavy-duty solenoid; flanged or threaded process connections; side electrical connector.

Working Principle The control signal modulates solenoid current, creating proportional magnetic lift force on the plunger to regulate gas flow area, delivering high flow rates with good linearity over the operating range.

Installation Requirements Install inline with flow direction arrow; mount vertically; provide upstream gas filtration; calibrate zero and span at actual operating pressure.




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