Semiconductor Crystal Grower Butterfly Valve from Japan
Specialized hand-operated cast iron butterfly valve for Czochralski crystal puller systems in silicon wafer manufacturing, HTS 8481.80.3030 butterfly type. Controls argon purge gas flow during monocrystalline boule growth per statistical notes. Designed for ultra-high purity environments.
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 statistical note reference and process description for favorable treatment; ensure particle and outgassing specs documented
• Differentiate from standard HVAC valves in entry paperwork