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Woodward 8904-444

Product Name:​ Linear Position Sensor (Woodward part 8904-444), cross-referenced to Macro Sensors HSD-750-500-0353 DC-operated LVDT.
Overview:​ A short-stroke 3/4 in diameter DC LVDT of the HSD-750 family, supplied under Woodward 8904-444. The HSD-750-500 equivalent gives a 0.5 in (12.7 mm) travel class, suited for compact actuator feedback.

Woodward 8904-418

Product Name:​ Linear Position Sensor (Woodward part 8904-418), cross-referenced to Macro Sensors HSD-750-1000-0393 DC-operated LVDT.
Overview:​ A 3/4 in (19 mm) diameter sealed DC LVDT from the Macro Sensors HSD-750 series, supplied as Woodward 8904-418. The HSD-750-1000 equivalent provides a 1.0 in (25.4 mm) measurement range.

Woodward 8904-390

Product Name:​ Small Gas Fuel Valve (Woodward 8904-390), 1907-series small gas valve.
Overview:​ A Woodward 1907-series small gas fuel-metering valve supplied as a valve-only assembly under 8904-390. It provides precise gas-flow control for small- to mid-size industrial gas turbines and gas engines.
Technical Specifications:
  • Series: Woodward 1907 Small Gas Valve

Woodward 8904-371

Product Name:​ Linear Position Sensor (Woodward part 8904-371), cross-referenced to Macro Sensors VRT-1250-1000-0744 DC-operated LVDT.
Overview:​ A mid-stroke DC LVDT of the VRT-1250 family, supplied under Woodward 8904-371. The 1000-thou (1.0 in) measurement range fits compact actuator position feedback.

Woodward 8904-305

Product Name:​ Linear Position Sensor (Woodward part 8904-305), cross-referenced to Macro Sensors VRT-1250-8000-0887 DC-operated LVDT.
Overview:​ A long-stroke DC LVDT of the Macro Sensors VRT-1250 series, supplied as Woodward 8904-305. The 8000-thou (8.0 in) travel makes it suitable for large linear actuators and wide-range position feedback.

Woodward 8904-303

Product Name:​ Linear Position Sensor (Woodward part 8904-303), cross-referenced to Macro Sensors VRT-1250-4000-0787 DC-operated LVDT.
Overview:​ A 1.25 in (31.75 mm) diameter DC LVDT from the Macro Sensors VRT-1250 family, supplied under the Woodward number 8904-303. Designed for heavy-duty linear position measurement where a larger body and extended stroke are needed.

Woodward 8904-289

Product Name:​ Digital Speed Governor / Microprocessor Synchronizer (Woodward 8904-289).
Overview:​ A 24 Vdc-powered microprocessor-based controller and synchronizer for diesel- or gas-engine-driven generators. It provides speed and load control plus automatic frequency, phase, and voltage matching for paralleling with Woodward or third-party AVRs.

Woodward 8904-238

Product Name:​ Linear Position Sensor (Woodward part 8904-238), cross-referenced to Macro Sensors VRT-750-8000-0585 DC-operated LVDT.
Overview:​ A sealed, DC-powered linear variable differential transformer (LVDT) used for high-accuracy position feedback in Woodward turbine, compressor, and fuel-control actuators. It carries the robustness of the Macro Sensors VRT-750 series with an 8000-thou (8.0 in / 203.2 mm) measurement range.

Woodward 8904-166

Product Name:​ 505 Series Digital Governor for Steam Turbines
Product Introduction:​ This model belongs to the Woodward 8904 series and is part of the renowned 505 Digital Governor product line. The 505 is a microprocessor-based digital governor designed specifically for controlling steam turbines, turbine generators, and turbine expanders. It provides precise speed and load control with high accuracy, stability, and simple operation.

Woodward 9908-300

Product Name:​ Oil Metering Valve / 505 Series Digital Governor Control Module
Product Introduction:​ This model is explicitly identified in the official Woodward Installation and Operation Manual as part of the "Oil Metering Valve 9908-002, 9908-300, and similar" product family. Additionally, it is recognized in commerce as a 505 Series Digital Governor for steam turbine control applications.

Woodward 9908-005

Product Name:​ LQ25 Series Liquid Fuel Metering Valve
Product Introduction:​ This model is a member of the Woodward LQ25 series liquid fuel metering valve family. The LQ25 valve is an all-electric liquid fuel metering valve designed for precise fuel flow control in industrial and aeroderivative gas turbines, serving as a critical interface between electronic control systems and gas turbine combustion systems.

Woodward 9908-002

Product Name:​ Oil Metering Valve
Product Introduction:​ This model is explicitly identified in the official Woodward Installation and Operation Manual as "Oil Metering Valve 9908-002, 9908-300, and similar". It is a Woodward hydraulic liquid metering valve designed for precise fuel flow control in industrial gas turbine applications.