Product Overview
GE F35-W03-HKH-F8L-H6D-M6C-PXX-UXX-WXX is a high-precision two-stage electro-hydraulic servo valve specially designed for GE power generation units. It serves as a core precision control component for main control systems of steam turbines and gas turbines. Adopting GE professional modular coding standards, the fixed main section defines the valve structure, flow grade, coil configuration and pressure specifications. The suffix PXX, UXX, WXX are factory-reserved customizable parameters, which can be precisely matched according to unit operating conditions, system pressure and control logic.
This servo valve adopts a classic two-stage nozzle-flapper, mechanical feedback and 4-way control structure, featuring fast response, high control accuracy, excellent linearity, low temperature drift and strong pollution resistance. Designed for 24-hour continuous heavy-duty, high-temperature and high-vibration working conditions in power plants, it integrates a complete fail-safe protection mechanism. It stably realizes valve position control, speed regulation, pressure and flow closed-loop adjustment for turbines, and is an original core spare part for unit maintenance, replacement and upgrading of power plants.
2. Technical Parameters
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Parameter
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Specification
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Product Type
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Two-stage nozzle-flapper, mechanical feedback, 4-way electro-hydraulic servo valve
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Applicable Equipment
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GE steam turbine and gas turbine generator units
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Control Mode
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Closed-loop current signal servo control
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Working Medium
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Power plant fire-resistant oil, high-grade industrial hydraulic oil
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Working Condition
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Long-term continuous operation, high temperature, high vibration, heavy-duty operation
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Core Functions
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Unit speed regulation, precise valve position control, hydraulic pressure & flow closed-loop adjustment, fail-safe self-locking
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Structural Features
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Precision pilot filtration, built-in null adjustment, pollution resistance, fatigue resistance
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Model Characteristics
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Fixed core specification; PXX/UXX/WXX support customized condition matching
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Origin
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Original USA imported
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3. Product Features
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Professional Power Plant Compatibility: Customized for GE power generation control systems, fully matching original logic, installation dimensions and control parameters. Plug-and-play replacement without program or pipeline modification.
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High Control Precision: Two-stage precision control structure ensures fast dynamic response, high linearity and ultra-low temperature drift, greatly improving unit speed regulation stability and control accuracy.
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Excellent Durability Under Harsh Conditions: High-strength alloy valve body resists high temperature, vibration, oil aging and contamination, adapting to long-term non-stop heavy-duty operation of power units.
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Convenient Maintenance: Equipped with pilot filtration system and null trimming structure, simple on-site commissioning, low failure rate, effectively reducing maintenance costs and downtime risks.
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Complete Safety Protection: Built-in power-off and signal-loss fail-safe function locks the valve position under abnormal conditions, preventing unit runaway and ensuring safe and stable operation of power generation equipment.
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Modular Customization: Reserved PXX, UXX, WXX parameter expansion positions adapt to gas and turbine generator units of different capacities and parameters, offering wide application flexibility.
4. Application Scope
As a special core control component for the energy and power generation industry, this servo valve is widely used in main control systems of GE gas turbines and steam turbines, power plant DEH speed regulation control systems, hydraulic servo actuator systems, unit load regulation systems, equipment maintenance and replacement for thermal & gas power plants, and upgrading projects of old control systems. It is widely applied in high-precision hydraulic servo control scenarios of large and medium-sized thermal power plants, gas power plants and cogeneration units worldwide.
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