Float Zone Crystal Grower Circulation Pump Diffuser
This custom diffuser is designed for circulation pumps in float zone crystal growers, optimizing argon gas-liquid flow for pure silicon production. It ensures defect-free monocrystalline growth by maintaining stable fluid dynamics. As a part of a liquid pump, it is classified under tariff item 8413.91.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | +25.0% | 25% |
| 🇩🇪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 diffuser is imported with the complete circulation pump
A complete pump with diffuser is classified as a centrifugal pump.
If the diffuser is part of a valve assembly
Parts of valves and similar appliances may be classified under 8481.90.00.
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
• Classify the diffuser as a pump part under 8413.91.00, ensuring it is not declared as a general flow control device
• Provide the pump model and the crystal growing application to support classification
• Confirm the diffuser's material and design specifications for CBSA
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