Semiconductor Crystal Grower Butterfly Valve from Canada
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 — Canada → United States
15.6%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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