Silicon Wafer Polisher DI Water Valve
Ultra-pure DI water delivery valve for final wafer polishers achieving mirror-finish surface flatness critical for device fabrication. HTS 8481.90.9085 per statistical note (a)(ii)(C) for wafer polishers in semiconductor prep.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If non-semiconductor wafer processing
General polishing for other materials uses broader 'other' valve parts.
If distilling/deionizing equipment parts
DI water generation system components classify under Chapter 84 water machinery.
If with integrated flatness measuring
Measuring-integrated polish valves shift to Chapter 90 optical instruments.
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Import Tips & Compliance
• Include resistivity specs (>18 MΩ-cm water) tying to polish flatness requirements
• Request binding ruling for series imports to lock in 8481.90.9085 treatment
Related Products under HTS 8481.90.90.85
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Adjustable flow regulator valve for lapping machines maintaining consistent slurry pressure across wafer surface for tolerance compliance. Under HTS 8481.90.9085, statistical (a)(ii)(C).
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Vacuum isolation valve for boule processing chambers preventing contamination during wafer slicing/grinding prep. HTS 8481.90.9085 for semiconductor wafer manufacturing equipment parts.
Semiconductor Wafer Grinder Air Valve
Pneumatic air valve actuating wafer grinder spindles for precise boule diameter control in prep equipment. Per HTS 8481.90.9085, note (a)(ii)(A/C).
Wafer Lapping Machine Slurry Valve
Corrosion-resistant valve dosing abrasive slurry in wafer lappers achieving sub-micron flatness for fabrication readiness. Classified HTS 8481.90.9085 under statistical note (a)(ii)(C) for wafer grinder/lappers/polishers.
Semiconductor Wafer Processing Valve
A precision stainless steel valve designed for controlling gas flow in semiconductor wafer processing equipment, such as crystal growers and pullers using Czochralski methods. It falls under HTS 8481.90.9085 as a part of semiconductor manufacturing apparatus classified as 'other' parts of valves for pipes and tanks. This ensures accurate classification separate from general industrial valves.
Czochralski Crystal Puller Flow Control Valve
High-purity valve for regulating argon or nitrogen flow in Czochralski crystal growers used to produce monocrystalline silicon boules for wafers. Classified under HTS 8481.90.9085 as 'other' parts tailored for semiconductor material growth equipment. Meets statistical note (a)(i) for crystal pullers.