High Purity Butterfly Valve for Wafer Grinding
Hand-operated cast iron butterfly valve with electropolished interior for semiconductor wafer grinding equipment coolant systems, HTS 8481.80.3030. Used post-crystal grinding to maintain flatness tolerances per statistical notes. Resists slurry abrasion.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If mounted on wafer grinder machines
Complete grinding machines classify in machinery headings.
If stainless steel high-purity construction
Material purity variants use steel provisions.
If chemical delivery valves for fab processes
Chemical-specific valves for semiconductor chemicals classify separately.
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Import Tips & Compliance
• Document electropolish specs and semiconductor end-use; cross-reference statistical notes (b)(ii)(C)
• Avoid generic 'industrial valve' descriptions
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