Crystal Boule Grinder Pressure Valve
Hydraulic pressure regulating valve for crystal grinders that shape semiconductor boules to exact wafer diameters and flats indicating conductivity. HTS 8481.90.9085 applies as 'other' part per statistical note (a)(ii)(A) for boule grinding equipment.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If specifically for wafer polishers
Polishing equipment has distinct statistical subheading from grinding.
If for semiconductor-specific pumps
Hydraulic pump-integrated valves classify with Chapter 84 engines/pumps.
If industrial grinding machine parts
Non-semiconductor grinders fall under Chapter 84 machine tool parts.
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Import Tips & Compliance
• Document grind tolerance specs (±0.1mm diameter) linking to statistical note for boule preparation
• Use HTSUS advisory rulings for confirmation if importing high volumes from Asia
Related Products under HTS 8481.90.90.85
Wafer Prep Lapper Flow Regulator
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).
Monocrystalline Silicon boule Vacuum Valve
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.