PTFE Diaphragm Valve for Wafer Grinding Equipment from Japan
Hand-operated diaphragm valve with PTFE body for slurry control in crystal grinders that shape semiconductor boules to precise wafer diameters. The fluoropolymer material ensures chemical resistance in abrasive processing. Classified in 8481.80.50 as hand-operated valve of plastic/other materials for wafer preparation apparatus.
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
• Include material safety data sheets confirming PTFE construction for 'other materials' verification
• Document compatibility with semiconductor slurries to justify specialized classification
• Avoid misclassification as plastic pipe fittings; emphasize valve function for pipes/tanks