Hand-Turned Diaphragm Valve for Wafer Lapping Slurry from Mexico
Brass hand-turned diaphragm valve for metering abrasive slurry in wafer lapping and polishing equipment, critical for flatness in semiconductor wafer preparation. Classified under HTS 8481.80.5090 for other hand-operated valves of non-steel materials.
Duty Rate — Mexico → United States
13%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide slurry compatibility test data (e.g
• for silica or alumina) to support semiconductor end-use claims
• Label with maximum pressure and temperature ratings to comply with ASME B16 standards for customs
• Avoid reclassification by specifying 'diaphragm type' distinctly from ball or gate in entry docs