Electro-Pneumatic Control Valve for Crystal Puller Systems
An electro-pneumatic valve with electrical actuator manages inert gas flow in Czochralski crystal pullers used to grow monocrystalline silicon boules for semiconductor wafers. Classified under HTS 8481.80.9025 due to its electrical actuation and application in semiconductor material processing equipment.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for process valves without specified electrical actuators
Other process valves lacking electro-hydraulic or electrical features fall into broader 'other' categories.
If designed for integration into complete semiconductor testing apparatus
Instruments for measuring flow in semiconductor testing equipment are covered in Chapter 90.
If when imported as components of unclassified semiconductor wafer manufacturing machines
Parts of machines not elsewhere specified for semiconductor processing shift to Chapter 84 machinery parts.
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Import Tips & Compliance
• Provide evidence of compatibility with ultra-pure gases and pressure specifications to confirm semiconductor-specific use
• Ensure FDA or equivalent cleanroom certifications for valves contacting process fluids in wafer production
• Avoid common pitfalls by declaring actuator type accurately to prevent reclassification as manual valves
Related Products under HTS 8481.80.90.25
Electrically Actuated Solenoid Valve for Semiconductor Wafer Processing
This solenoid valve with an electrical actuator controls the flow of gases or liquids in semiconductor wafer fabrication equipment, such as during crystal growth or wafer polishing processes. It falls under HTS 8481.80.9025 as an other appliance with an electrical actuator used in high-precision manufacturing environments like semiconductor production.
Electrically Actuated Gate Valve for Wafer Grinding Equipment
This gate valve, featuring an electrical actuator, regulates coolant flow in crystal grinders that shape semiconductor boules to precise diameters for wafer production. It is classified under HTS 8481.80.9025 for valves with electrical actuators used in specialized semiconductor preparation.
Electro-Hydraulic Ball Valve for Float Zone Crystal Growers
An electro-hydraulic actuated ball valve controls high-purity process fluids in float zone crystal growers for producing semiconductor silicon ingots. Falls under HTS 8481.80.9025 as an other valve with electro-hydraulic actuator for semiconductor boule manufacturing.
Electrical Actuator Diaphragm Valve for Wafer Slicing Coolant Lines
Diaphragm valve with electrical actuator maintains precise coolant pressure in wafer slicing saws that cut monocrystalline boules into semiconductor wafers. Classified in HTS 8481.80.9025 for electrically actuated valves in semiconductor wafer preparation equipment.
Electro-Actuated Check Valve for Semiconductor Lapping Fluid Control
Check valve with electro-actuator prevents backflow of abrasive slurries in wafer lappers and polishers that achieve flatness tolerances for semiconductor fabrication. HTS 8481.80.9025 applies to its electrical actuation in critical wafer preparation processes.
Precision Electrical Butterfly Valve for Crystal Grinder Coolant
Butterfly valve with electrical actuator provides throttling control of coolant in grinders shaping crystal boules to wafer specifications. Falls under HTS 8481.80.9025 for electrically actuated appliances in semiconductor crystal processing.