Semiconductor Crystal Grower Butterfly Valve from Mexico
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 — Mexico → United States
15.6%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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