Czochralski Crystal Puller Compressor Valve
This precision compressor valve is a critical part of the gas delivery system in Czochralski crystal pullers used for growing monocrystalline silicon boules in semiconductor manufacturing. It regulates high-purity argon or nitrogen flow under vacuum conditions to prevent contamination during crystal growth. Classified under 8414.90.41.55 as a part of hermetic compressors in subheading 8414.40 for semiconductor wafer production equipment.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified primarily as a valve rather than compressor component
Standalone control valves fall under Chapter 84 appliances, not specifically compressor parts.
If for non-semiconductor industrial compressors
Parts of compressors not dedicated to semiconductor manufacturing equipment use broader 'other' provisions.
If integral to vacuum testing apparatus
Instrument parts for semiconductor device testing shift to Chapter 90 precision equipment.
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Import Tips & Compliance
• Verify the part is specifically for 8414.40 hermetic compressors used in semiconductor equipment via manufacturer specs and end-use certification
• Include detailed technical drawings and bills of materials showing compatibility with crystal growers to avoid reclassification
Related Products under HTS 8414.90.41.55
Float Zone Crystal Grower Vacuum Pump Rotor
The rotor assembly for hermetic vacuum pumps in float zone crystal growers, enabling ultra-high vacuum (UHV) conditions for producing pure monocrystalline semiconductor rods from polycrystalline silicon. This part handles the compression of process gases during zone melting. Falls under 8414.90.41.55 as a component of 8414.40 compressors in semiconductor wafer manufacturing apparatus.
Crystal Grinder Pneumatic Compressor Cylinder
Cylinder housing for hermetic pneumatic compressors powering the grinding spindles in crystal grinders that shape semiconductor boules to precise wafer diameters and flats. Provides contamination-free compressed air for high-speed precision grinding. Under 8414.90.41.55 as part of 8414.40 compressors for wafer preparation equipment.
Silicon Wafer Polisher Vacuum Compressor Manifold
Multi-port manifold for hermetic vacuum compressors supplying precisely controlled suction in silicon wafer polishers, achieving mirror-finish surfaces for device fabrication. Distributes clean dry air/vacuum to polishing pads. Part of 8414.40 compressors under 8414.90.41.55 for semiconductor wafer prep equipment.
Gallium Arsenide Crystal Grower Hermetic Compressor Motor
Brushless motor specifically designed for hermetic compressors in GaAs crystal growers using Liquid Encapsulated Czochralski (LEC) method for compound semiconductor wafers. Operates in corrosive ambients with encapsulant vapors. 8414.90.41.55 classification for 8414.40 parts in statistical note semiconductor equipment.
Wafer Grinder Spindle Air Bearing Compressor Housing
Precision housing for hermetic compressors generating clean compressed air for air bearing spindles in wafer grinders, maintaining sub-micron runout for boule diameter control. Essential for semiconductor wafer flat preparation. Under 8414.90.41.55 for crystal grinder compressors.
Diamond Wire Wafer Saw Coolant Recovery Compressor Scroll
Scroll element for oil-free hermetic compressors in coolant recovery systems of diamond wire wafer saws, recycling slurry while maintaining wafer surface quality. Handles abrasive particle-laden fluids. 8414.90.41.55 for 8414.40 semiconductor slicing compressors.