Centrifugal and axial
Air or vacuum pumps, air or other gas compressors and fans; ventilating or recycling hoods incorporating a fan, whether or not fitted with filters; gas-tight biological safety cabinets, whether or not fitted with filters; parts thereof: > Other, except parts: > Other compressors > Other: > Centrifugal and axial
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8414.80.20.15
Czochralski Crystal Puller Vacuum Pump
A centrifugal vacuum pump used in Czochralski crystal growers to create the high-vacuum environment necessary for producing monocrystalline silicon boules from which semiconductor wafers are sliced. It falls under HTS 8414.80.20.15 as a centrifugal air or vacuum pump integral to semiconductor manufacturing equipment for crystal growth. This classification aligns with statistical notes for wafer manufacturing equipment.
Float Zone Crystal Growth Axial Compressor
An axial gas compressor employed in float zone crystal pullers to manage inert gas flow and pressure during the production of high-purity monocrystalline semiconductor boules. Classified under HTS 8414.80.20.15 for axial compressors in semiconductor wafer manufacturing per statistical notes on crystal growers and pullers.
Semiconductor Wafer Slicing Saw Vacuum Pump
Centrifugal vacuum pump integrated with wafer slicing saws to evacuate cutting zones and coolant chambers during precise slicing of semiconductor wafers from crystal boules. HTS 8414.80.20.15 applies as centrifugal pumps for wafer preparation equipment noted in statistical definitions.
Crystal Boule Grinder Centrifugal Air Compressor
Centrifugal compressor supplying clean, dry air to pneumatic controls and coolant systems in crystal grinders that shape semiconductor boules to precise wafer diameters. Falls under HTS 8414.80.20.15 per statistical notes for wafer preparation grinders.
Wafer Lapping Machine Axial Vacuum Pump
Axial vacuum pump removing slurry and debris during the lapping process that achieves critical flatness on semiconductor wafers prior to fabrication. Classified in HTS 8414.80.20.15 as axial pumps for wafer preparation equipment listed in statistical notes.
Silicon Wafer Polisher Vacuum Centrifugal Pump
High-vacuum centrifugal pump evacuating chemical mechanical polishing (CMP) chambers to prevent contamination during final wafer surface preparation for device fabrication. HTS 8414.80.20.15 covers centrifugal pumps in wafer polishers per statistical wafer preparation provisions.
Gallium Arsenide Wafer Processing Axial Compressor
Axial compressor delivering precisely controlled gas atmospheres for gallium arsenide wafer processing equipment covered in statistical notes. Used in both growth and preparation stages; HTS 8414.80.20.15 for axial types in semiconductor apparatus.
Monocrystalline Boule Vacuum Axial Pump System
Axial pump system for maintaining ultra-high vacuum in monocrystalline boule production chambers, essential for semiconductor wafer source material. Directly matches statistical note (a)(i) crystal growers/pullers; HTS 8414.80.20.15 classification.
Wafer Grinder Coolant Centrifugal Compressor
Centrifugal compressor for high-pressure coolant delivery in wafer grinders that prepare crystal flats indicating conductivity type per statistical notes. HTS 8414.80.20.15 for centrifugal types in wafer prep equipment.
Semiconductor Crystal Slicer Gas Axial Compressor
Axial compressor managing process gases during inner diameter (ID) saw slicing of semiconductor crystals into wafers. Statistical note (a)(ii)(B) wafer slicing saws; HTS 8414.80.20.15 classification.