Float Zone Crystal Grower Inlet Valve from Japan
Specialized inlet valve for vacuum-sealed float zone crystal growers producing high-purity silicon ingots from polycrystalline rods. HTS 8481.90.9085 covers it as 'other' valve parts for semiconductor crystal growth per statistical note (a)(i). Ensures contamination-free operation.
Duty Rate — Japan → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Submit statistical note references in entry docs to link valve to float zone methods and prevent reclassification
• Test for helium leak rates (<10^-9 atm cc/sec) and document for customs verification