Copper Inline Check Valve for Semiconductor Wafer Lappers
Compact inline copper check valve exceeding 850 kPa for slurry lines in wafer lapping machines, ensuring consistent abrasive flow direction for flatness precision. Classified HTS 8481.30.10.90 as copper high-pressure check valve for semiconductor wafer preparation.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pressure rating exactly 850 kPa or specific lower bands
Different pressure statistical breaks within copper check valves.
If with automatic temperature/pressure control
Thermostatic or automatic control valves move to Chapter 90.
If as integral part of wafer processing machine
Parts of semiconductor manufacturing machines classified with equipment.
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Import Tips & Compliance
• Include flow coefficient (Cv) data for performance verification; ensure particle-free copper for cleanroom use; file with correct statistical suffix for accurate duties
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