Semiconductor Wafer Fab Check Valve Poppet from Japan
Ceramic poppet for high-purity check valves preventing backflow in gas lines of semiconductor wafer processing equipment. Precision-ground for ultra-clean environments, classified under general valve parts HTS 8481.90.90 unless proven as machinery-specific.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide end-use statements linking to specific wafer fab tools to argue for machinery classification
• Cleanroom certification (ISO 14644) and particle count specs strengthen parts-of-machines claims
• Avoid general 'ceramic valve part' descriptions; specify semiconductor process compatibility