Wicket Gates Assembly
Adjustable guide vanes (wicket gates) that control water flow into Francis turbine runners, regulating power output and preventing cavitation. Precision-machined from stainless steel. HTS 8410.90.00.00 as regulators/parts for hydraulic turbines.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If functioning primarily as control valves
Gate valves for general fluid control fall under Chapter 84 valves/taps heading 8481.
If parts of liquid pumps
Similar guide vanes in pumps classify under 8413 pump parts, not turbines.
If electronic flow regulators
Automated control components may go to Chapter 90 automatic regulating instruments.
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Import Tips & Compliance
• Document servo-motor integration if electronic; may require separate FCC compliance
• Use detailed assembly drawings showing linkage to turbine governor for classification proof
Related Products under HTS 8410.90.00.00
Kaplan Turbine Blades
Adjustable propeller blades for Kaplan turbines used in low-head, high-flow hydroelectric sites, allowing pitch variation for efficiency. Typically cast from stainless steel or bronze alloys. Classified as parts of hydraulic turbines under HTS 8410.90.00.00.
Turbine Draft Tube
Conical or elbow-shaped draft tube that recovers kinetic energy from water exiting hydraulic turbine runners, improving overall efficiency. Fabricated from welded steel plate. Parts of hydraulic turbines under HTS 8410.90.00.00.
Stay Ring for Turbine
Circular steel ring with radial stay vanes that support spiral casing and guide water flow evenly to wicket gates in Francis turbines. High-strength welded construction. Classified under HTS 8410.90.00.00 turbine parts.
Turbine Bearing Housing
Oil-lubricated bearing housings for supporting turbine main shafts, designed for continuous operation under high radial and thrust loads. Includes cooling jackets. HTS 8410.90.00.00 as hydraulic turbine parts.
Head Cover for Turbine
Top steel cover plate sealing the upper chamber of Francis turbines above the runner, designed to withstand hydraulic head pressure. Includes lifting lugs for maintenance. Parts under HTS 8410.90.00.00.
Servomotor for Wicket Gates
Hydraulic or electric servomotor actuating wicket gate linkages in reaction turbines, providing precise position control under high pressure. Integrated position feedback. Regulators/parts under HTS 8410.90.00.00.