PTFE Diaphragm Valve for Wafer Grinding Equipment from China
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 — China → United States
38%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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