Brass Non-Return Valve for Crystal Puller Gas Systems from China
A brass check valve rated over 850 kPa for argon or nitrogen gas lines in Czochralski crystal pullers, ensuring unidirectional flow to maintain ultra-pure monocrystalline silicon boule growth. Classified under HTS 8481.30.10.90 for its copper alloy construction and high-pressure semiconductor application.
Duty Rate — China → United States
40.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Provide material test reports confirming copper/brass alloy; check for RoHS compliance in semiconductor supply chains; register with customs for high-value tech equipment valuations