Wafer Lapping Machine Pressure Valve
Hydraulic pressure regulating valve for maintaining consistent force in double-side wafer lappers achieving dimensional tolerances. Classified in HTS 8481.80.9050 for semiconductor wafer preparation appliances. Ensures parallelism within microns.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If linear acting cylinder part
Hydraulic valves integral to lapping cylinders follow cylinder heading.
If lapping machine parts
Recognized semiconductor lapping machines have specific parts provisions.
If with automatic pressure process control
Automatically-controlled hydraulic valves classify as hydraulic regulators.
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Import Tips & Compliance
• Document target thickness tolerances (e.g
• ±0.5μm) linking to lapping
• Include hydraulic fluid specs for semiconductor cleanroom approval
• Avoid general 'hydraulic valve' description to prevent 8412 classification
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