Brass Ball Valve for Semiconductor Wafer Processing
A hand-operated brass ball valve designed for controlling gas flow in crystal growers and pullers used to produce monocrystalline semiconductor boules via Czochralski method. Made of brass (other material per 8481.80.50), it features precision sealing for ultra-pure environments in wafer manufacturing equipment. Classified here as a hand-operated valve for pipes in semiconductor processing apparatus.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not hand-operated, e.g., solenoid or pneumatic actuated
Automatically operated valves for semiconductor equipment fall under the non-hand-operated subcategory.
If includes integrated check valve function
Combination check valves, even hand-operated, are separately classified regardless of material.
If incorporates electronic sensors for flow monitoring
Instrument-type valves with automatic control features for semiconductor testing move to Chapter 90.
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Import Tips & Compliance
• Verify material composition certification showing brass content to confirm 'other materials' classification excluding iron/steel
• Include documentation proving use in semiconductor manufacturing to support valuation and potential duty relief programs
• Ensure valves meet pressure and leak test standards for cleanroom compatibility to avoid customs holds
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