Hand-Operated Needle Valve for Crystal Pullers
Precision hand-operated needle valve made of brass for fine adjustment of process gases in Czochralski crystal pullers during monocrystalline silicon boule growth. Classified under HTS 8481.80.5090 as a hand-operated appliance of other materials for pipes in semiconductor manufacturing apparatus.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If composed of iron or steel, non-stainless
Iron/steel hand-operated valves shift to 8481.80.30, based on primary material composition.
If incorporating precise measurement and automatic control features
Valves with integrated sensors for process testing may classify as measuring appliances in Chapter 90.
If specifically designed as parts of laboratory heat exchange units in wafer prep
Parts for lab turbo-molecular pumps or heat exchangers in semiconductor equipment use Chapter 84 provisions.
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Import Tips & Compliance
• Include technical specs showing leak rates below 10^-9 sccs for high-vacuum certification during import declaration
• Avoid common pitfalls by labeling as 'semiconductor process valve' to distinguish from general plumbing valves
• Ensure supplier provides RoHS compliance docs, as EU re-export may require it for electronics manufacturing components
Related Products under HTS 8481.80.50.90
Brass Ball Valve for Semiconductor Wafer Processing
A hand-operated brass ball valve designed for precise control of gas and liquid flows in semiconductor wafer fabrication equipment, such as crystal growers and pullers. It falls under HTS 8481.80.5090 as a hand-operated valve made of brass (other metals), used in high-purity environments for pipes and tanks in cleanrooms.
Hand-Turned Diaphragm Valve for Wafer Lapping Slurry
Brass hand-turned diaphragm valve for metering abrasive slurry in wafer lapping and polishing equipment, critical for flatness in semiconductor wafer preparation. Classified under HTS 8481.80.5090 for other hand-operated valves of non-steel materials.
Brass Gate Valve for Wafer Grinding Coolant Lines
Hand-operated brass gate valve for controlling coolant flow in wafer grinding machines, ensuring precise tolerances during crystal boule preparation. It is classified in HTS 8481.80.5090 for hand-operated valves of other materials used in semiconductor processing tanks and pipes.
Monel Check Valve for Float Zone Crystal Growers
Hand-operated monel alloy check valve preventing backflow in inert gas lines of float zone crystal growers for semiconductor material processing. Falls under HTS 8481.80.5090 as other hand-operated valves of materials neither steel nor plastic.
Bronze Plug Valve for Wafer Slicing Coolant Tanks
Hand-operated bronze plug valve for drain lines on coolant tanks in wafer slicing saws, used to process semiconductor boules into wafers. HTS 8481.80.5090 applies to this other material hand-operated appliance.
Alloy Butterfly Valve for Crystal Grinder Exhaust
Hand-lever operated aluminum bronze butterfly valve for exhaust control on crystal grinders in semiconductor boule preparation lines. Fits HTS 8481.80.5090 as hand-operated other material valve for process pipes.