High Vacuum Pump Bellows Valve

Bellows-sealed isolation valves control gas flow in vacuum pump inlet manifolds for semiconductor wafer grinders. HTS 8414.90.91.40 covers it as a part of vacuum pumps in wafer preparation equipment. Ensures all-metal, bakeable seals for UHV conditions.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8481.80.90Higher: 37% vs 35%

If imported separately for general vacuum service

Non-pump-specific valves go to valves and similar articles.

8414.90.41.40Same rate: 35%

If dedicated to boule grinder vacuum extraction

Wafer prep grinders/lappers have precise statistical categories.

8479.90Lower: 10% vs 35%

If as component in complete wafer polishing machine

Parts of unfinished semiconductor machines classify under 8479.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Specify bakeout temperature ratings (>200°C) to prove semiconductor fab suitability

Pair with pump model affidavits for binding ruling requests if uncertain