Czochralski Crystal Puller Pump
A high-precision liquid pump used in Czochralski crystal growers to control the flow of molten silicon during monocrystalline boule production for semiconductor wafers. It falls under HTS 8413.81.0040 as an other pump specifically for semiconductor manufacturing equipment. This pump maintains stable melt levels critical for defect-free crystal growth.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If fitted with a flow measuring device
Pumps with integrated measuring devices shift to specific provisions for those fitted with meters, regardless of end use.
If imported as a replacement part for the crystal grower unit
Parts of pumps are classified separately under valve and pump parts if not assembled into complete pumps.
If for testing equipment in semiconductor device validation
Certain liquid pumps in testing apparatus for semiconductor devices fall under Chapter 90 instruments.
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Import Tips & Compliance
• Verify pump specifications match semiconductor process requirements for correct subheading; provide equipment end-use documentation to avoid reclassification
• Ensure compatibility certifications for cleanroom environments to prevent customs holds
Related Products under HTS 8413.81.00.40
Float Zone Melting Process Pump
Specialized pump for circulating inert gases or cooling liquids in float zone crystal growth systems producing high-purity silicon boules for wafers. Classified in HTS 8413.81.0040 as other pumps integral to semiconductor wafer manufacturing equipment. Ensures thermal stability during zone refining process.
Wafer Slicing Coolant Pump
Liquid pump delivering coolant to diamond wire saws during wafer slicing from silicon boules in semiconductor fabrication. HTS 8413.81.0040 covers this as other pumps for wafer preparation equipment. Maintains blade temperature for precise, thin wafer cuts without thermal damage.
Crystal Boule Grinder Slurry Pump
Abrasive slurry pump for crystal grinders shaping silicon boules to exact wafer diameters and flats indicating conductivity. Under HTS 8413.81.0040 for pumps in semiconductor wafer prep equipment. Provides consistent slurry flow for precision grinding.
Wafer Lapping Coolant Circulation Pump
Circulation pump for coolant in wafer lappers achieving flatness tolerances for semiconductor fabrication. HTS 8413.81.0040 as other pump in wafer preparation apparatus. Removes heat and debris during lapping for mirror-surface wafers.
Wafer Polishing Slurry Feed Pump
Precision metering pump feeding chemical slurry to polishers preparing wafer surfaces for device fabrication. Classified HTS 8413.81.0040 for semiconductor wafer processing pumps. Delivers uniform slurry for sub-micron surface flatness.
Semiconductor Wafer Cleaning Rinse Pump
High-purity DI water pump for post-polish wafer rinsing stations in wafer prep lines. HTS 8413.81.0040 covers pumps for semiconductor wafer preparation equipment. Ensures particle-free surfaces before fabrication.