Copper Inline Check Valve for Semiconductor Wafer Lappers
A compact inline copper check valve exceeding 850 kPa for slurry lines in wafer lapping machines, ensuring consistent abrasive flow direction for flatness precision. Its copper construction and high-pressure rating qualify it under tariff item 8481.30.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
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 the valve is not a nonreturn type
Other valves are classified under this residual heading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide the valve's pressure rating and copper alloy certification to support classification
• If the valve is part of a lapping machine, verify whether it should be classified with the machine under Section XVI Note 4
• Keep the end-use documentation ready for CBSA inspection
Related Products under Tariff item 8481.30.00
Brass Diaphragm Check Valve for Crystal Grinder Coolant
A brass diaphragm check valve designed for coolant systems in crystal grinders that shape semiconductor boules. It provides zero-leakage, unidirectional flow at pressures exceeding 850 kPa, ensuring precision during wafer preparation. Classified under tariff item 8481.30.00 as a check (nonreturn) valve of copper alloy.
Brass Inline Check Valve 1/4 Inch
> A compact 1/4-inch brass inline check valve for refrigerant lines and compressed air systems under low pressure, with ball or poppet mechanism. It is a nonreturn valve for pipes, classified under tariff item 8481.30.00.
Brass Non-Return Valve for Crystal Puller Gas Systems
A brass non-return valve rated above 850 kPa for argon or nitrogen gas lines in Czochralski crystal pullers. It ensures unidirectional gas flow to maintain ultra-pure monocrystalline silicon boule growth. Classified under tariff item 8481.30.00 as a check valve of copper alloy.
Brass Silent Check Valve 2 Inch
> A 2-inch brass silent check valve with cushioned disc closure to reduce water hammer in larger low-pressure water mains. It is a nonreturn valve for water distribution, classified under tariff item 8481.30.00.
Brass Swing Check Valve 1/2 Inch
> A 1/2-inch brass swing check valve designed to prevent backflow in low-pressure plumbing systems, featuring a hinged disc that swings open with forward flow and closes against reverse flow. It is a nonreturn valve, classified under tariff item 8481.30.00.
Bronze Horizontal Check Valve 3/8 Inch
> A 3/8-inch bronze horizontal inline check valve for fuel oil lines and low-pressure gas applications, oriented for horizontal piping. It is a nonreturn valve for pipes, classified under tariff item 8481.30.00.