Other compressors
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
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]
Subheadings
Products classified under HTS 8414.80.20
Czochralski Crystal Puller Compressor
A specialized compressor used in Czochralski crystal growers to maintain vacuum and gas pressure during the production of monocrystalline silicon boules for semiconductor wafers. It falls under HTS 8414.80.20 as an 'other compressor' essential for semiconductor manufacturing equipment, distinct from standard air compressors. This equipment supports the precise control required in crystal growth processes.
Float Zone Crystal Growth Compressor
Compressor designed for float zone crystal pullers that produce high-purity silicon ingots by creating controlled vacuum zones for semiconductor wafer production. Classified in HTS 8414.80.20 as an other compressor for semiconductor processing equipment. It ensures the inert gas atmosphere needed during the melting and zone refinement process.
Wafer Slicing Saw Vacuum Compressor
High-precision compressor supplying vacuum hold-down for wafer slicing saws that cut monocrystalline boules into semiconductor wafers. Under HTS 8414.80.20 for other compressors in wafer preparation equipment per statistical notes. Critical for maintaining wafer flatness during diamond saw slicing operations.
Crystal Boule Grinder Pressure Compressor
Compressor providing pneumatic pressure control for crystal grinders that shape semiconductor boules to precise diameters for wafer production. HTS 8414.80.20 applies to such other compressors in wafer manufacturing equipment. Ensures accurate grinding of conductivity flats on silicon boules.
Wafer Lapping Machine Gas Compressor
Gas compressor for wafer lappers that achieve ultra-flat surfaces on semiconductor wafers prior to fabrication. Falls under HTS 8414.80.20 as other compressor for wafer preparation equipment in statistical notes. Controls slurry flow and vacuum chucks during lapping process.
Semiconductor Wafer Polisher Compressor
Compressor unit for chemical mechanical planarization (CMP) polishers that deliver process gases to semiconductor wafer surfaces for mirror finish. HTS 8414.80.20 for other compressors in wafer preparation per Chapter 84 statistical notes. Essential for achieving nanoscale flatness before device fabrication.
Silicon Ingot Vacuum Compressor
Vacuum compressor for silicon ingot processing equipment that handles boule extraction and transfer in semiconductor manufacturing. Classified HTS 8414.80.20 as other compressor supporting wafer manufacturing equipment. Maintains contamination-free environment during ingot handling.
Gallium Arsenide Wafer Compressor
Specialized compressor for compound semiconductor wafer processing equipment handling gallium arsenide materials. HTS 8414.80.20 covers other compressors for such statistical note materials. Provides pressure control for epitaxial growth preparation.