Steel Check Valve Spring for Wafer Polisher Slurry Lines from Japan
High-tensile steel spring component in hand-operated check valves for unidirectional slurry flow in semiconductor wafer polishers. Under HTS 8481.90.3000 as steel part of check appliances in wafer prep equipment. Ensures mirror-finish wafer surfaces.
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
• Specify spring constant and corrosion resistance; bundle with valve assembly docs; pitfall: undervaluation as generic springs