PTFE Diaphragm Valve for Wafer Grinding Equipment from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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