Monocrystalline Boule Polishing Pump Valve Assembly
Specialized valve assembly for polishing pumps used in preparing monocrystalline semiconductor boules for wafer slicing. Classified in HTS 8413.91.9010 for parts of 8413.30.90 pumps in semiconductor processing. Controls precise chemical flow rates.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If functions primarily as process control valve
Valves with measuring/regulation functions classify in tap and valve heading.
If parts of gear pumps
Pump mechanism type (gear, centrifugal) determines specific part provisions.
If with integrated metering device
Gas/liquid meters integrated into pump parts shift to chapter 90.
Not sure which classification is right?
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Import Tips & Compliance
• Pressure rating documentation mandatory; SEMI S2 safety compliance often required; segregate from general industrial valves
Related Products under HTS 8413.91.90.10
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Wafer Grinding Coolant Pump Shaft
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