Steel Diaphragm Valve for Wafer Lapping Slurry Control
Hand-operated steel diaphragm valve component regulating abrasive slurry flow in wafer lappers and polishers for semiconductor surface flatness. Under HTS 8481.90.3000 as steel part of hand-operated valves in wafer preparation equipment. Prevents particle contamination during critical polishing steps.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If safety or relief valve function
Diaphragm valves serving pressure relief classify as complete safety valves, not hand-operated parts.
If parts of other valve types
Non-hand-operated/check valve parts use general parts provisions.
If ceramic diaphragm component dominates
Ceramic valve parts shift to Chapter 69 for ceramic articles.
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Import Tips & Compliance
• Include slurry compatibility test reports; label as semiconductor equipment part to avoid general valve classification; check for anti-dumping on steel
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