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Woodward 8915-894

Product Introduction​
According to available distributor records, the Woodward 8915-894 is associated with the 505 series of microprocessor-based digital governor controllers designed for steam turbine speed control and protection. It supports multiple communication protocols for integration with existing plant control systems. The device is engineered for high reliability in turbine control applications.

Woodward 8915-889

Product Name​
3103 Valve c/w TM55 Actuator (Electro-Hydraulic Fuel Valve Assembly)
Product Introduction​
Based on available product records, the Woodward 8915-889 is identified as a used/surplus GE gas turbine part configured as a "3103 Valve c/w TM55 Actuator" — a 3103 series rotary fuel valve combined with a TM55 electro-hydraulic actuator. This assembly is intended for fuel metering and control in industrial gas turbine applications.

Woodward 8915-887

Product Introduction​
The Woodward 8915-887 is a microprocessor-based digital control device primarily used to display and control turbine operating status and parameters. It controls turbine start, stop, acceleration, and deceleration by operating single or dual split-range actuators to drive steam inlet valves, thereby achieving speed control of turbocompressors. It serves industrial steam turbines, steam turbines, utility turbo-generators, and turboexpanders.

Woodward 8915-886

Product Introduction​
The Woodward 8915-886 is a microprocessor-based digital governor controller module belonging to the well-known 505 series. It is primarily designed for speed control and protection of steam turbines, especially for single-valve steam turbines, including single extraction/admission systems or split-range actuator configurations. The controller manages turbine startup, speed regulation, and extraction/admission control, and is suitable for industries such as power generation, oil & gas, petrochemical, and process automation.

Woodward 8915-922

Product Name:​ 3103 Series Electro-Hydraulic Servo Actuator (Integrated EM35 Driver, Extraction-Valve Dedicated Version)
Product Introduction:​ The 8915-922 is an electro-hydraulic servo actuator dedicated to steam turbine extraction control valves. Optimized for the frequent-regulation duty of extraction valves, its fatigue resistance is improved. With the integrated EM35 driver, it receives a 4–20 mA signal and uses the turbine lubricating oil source for continuous extraction pressure regulation. It is widely used in cogeneration extraction turbine units.

Woodward 8915-916

Product Name:​ 3103 Series Electro-Hydraulic Servo Actuator (Integrated EM35 Driver, High-Force Long-Stroke Version)
Product Introduction:​ The 8915-916 is a long-stroke, high-power electro-hydraulic servo actuator for large-diameter steam turbine control valves. With longer stroke and greater output force, it integrates the EM35 electronic driver and relies on steam turbine lubricating oil as the hydraulic power source. It is matched to large turbine set control valves for speed and load closed-loop regulation, and is predominantly used in coal-fired power and large cogeneration new-build and retrofit projects.

Woodward 8915-791

Product Name:​ 3103 Series Electro-Hydraulic Servo Actuator (Integrated EM35 Driver, High Vibration-Industrial Version)
Product Introduction:​ The 8915-791 is a reinforced, vibration-resistant version of the 3103 actuator, developed for industrial steam turbines and steam valves in gas-turbine combined-cycle auxiliaries where vibration is severe. The electrical section is vibration-hardened and the hydraulic components are strengthened. With the integrated EM35 driver, it receives a 4–20 mA signal and uses the turbine lubricating oil source. It delivers high stability in the most vibration-demanding duty.

Woodward 8915-747

Product Name:​ 3103 Series Electro-Hydraulic Servo Actuator (Integrated EM35 Driver, Short-Stroke Version)
Product Introduction:​ The 8915-747 is a short-stroke dedicated electro-hydraulic servo actuator for steam turbine control valves and extraction control valves where travel requirements are smaller. The overall footprint is compact, with the EM35 electronic driver integrated. It uses the turbine lubricating oil as the power medium and is suitable for steam turbine retrofit projects with limited installation space, delivering precise closed-loop valve position control.

Woodward 8915-728

Product Introduction:​ The 8915-728 is a high-force version of the linear electro-hydraulic servo actuator, designed for high-pressure control valves of large-power steam turbines. Compared with the standard model, its output force is increased to accommodate large-diameter control valves and withstand greater valve unbalance forces. The integrated electro-hydraulic design receives the 4–20 mA signal directly from the DCS with no external servo amplifier required. It is primarily used in new-build and retrofit projects for coal-fired and cogeneration large-power steam turbines.

Woodward 8915-679

Product Introduction:​ The 8915-679 is a linear-motion electro-hydraulic servo actuator developed for speed/governing control of small- and medium-sized steam turbines and turbomachinery. It converts an electronic analog command signal into a high-power linear hydraulic output force to directly drive the steam turbine control valve, achieving continuous speed and load regulation. The actuator integrates the EM35 electronic driver as a single, compact unit — no external servo amplifier is required. It operates from the turbine's lubricating oil supply and is widely used in power-generation turbines and industrial drive turbine retrofits.

Woodward 8915-584

Product Name:​ Woodward 3171 Gas Valve with Actuator
Product Introduction:​ The 8915-584 is catalogued in Woodward's 3171 valve-and-actuator family, supplied as a complete valve-and-actuator assembly. The 3171 series is Woodward's line of gas fuel metering valves paired with an actuator for gas-turbine fuel control. As a member of this family, the 8915-584 is intended for fuel metering duties on industrial gas turbines where a pre-assembled, calibrated valve-actuator package is required.

Woodward 8915-669

Product Name:​ Woodward 3171 Gas Valve with Actuator
Product Introduction:​ The 8915-584 is catalogued in Woodward's 3171 valve-and-actuator family, supplied as a complete valve-and-actuator assembly. The 3171 series is Woodward's line of gas fuel metering valves paired with an actuator for gas-turbine fuel control. As a member of this family, the 8915-584 is intended for fuel metering duties on industrial gas turbines where a pre-assembled, calibrated valve-actuator package is required.