Proportional Pressure Control Valve for Float Zone Crystal Furnace from Germany
Used in float zone furnaces for growing high-purity silicon crystals, this valve proportionally adjusts process gas pressure via electronic signals from vacuum controllers. Falls under 8481.80.9020 as a control valve designed for proportional signal operation in semiconductor crystal manufacturing apparatus. Maintains zone stability during melting without crucible contamination.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Specify vacuum-rated construction (e.g
• <10^-6 Torr) and signal protocol (Profibus/EtherCAT) in entry docs
• Classify individually, not as furnace parts, if imported separately with mounting hardware