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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%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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