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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pressure vessels/tanks
General pressure vessel components classify under Chapter 73 reservoirs.
If steel covers/plates
Non-pressurized steel plates go under other steel articles.
If transformer tank covers
Electrical equipment housings classify under Chapter 85.
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Import Tips & Compliance
• ASME pressure vessel stamping required; include design pressure calculations
• Specify gasket materials and torque sequences for sealing integrity
• Distinguish from manhole covers (7326.90) with pressure ratings
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.
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.
Turbine Generator Coupling
High-torque flexible coupling specifically designed to connect vertical hydraulic turbine shafts to generators, compensating for thermal expansion and alignment variations. Disc or gear type. HTS 8410.90.00.00 parts.