The Woodward 9907-685 is a mechanical-hydraulic actuator specifically engineered for integration into governor systems controlling prime movers such as diesel engines, gas turbines, and steam turbines. This actuator operates by translating hydraulic pressure from the governor pump into precise mechanical displacement to adjust fuel racks, throttle valves, or other fuel metering devices. Its design ensures proportional and stable response to speed changes, maintaining setpoint accuracy during load transitions, startups, and shutdowns. Constructed with durable materials to withstand harsh industrial environments, the actuator features precision-machined components for minimal friction and long service life. It is typically used in power generation, marine propulsion, and industrial mechanical drive applications where reliable speed control is critical. The 9907-685 exemplifies Woodward's expertise in hydraulic-mechanical control technology, offering simplicity, robustness, and consistent performance without relying on electronic components.

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