Pneumatic Diaphragm Valve for Gas Delivery in Crystal Pullers from Mexico
Diaphragm valve with pneumatic actuator for controlling process gases in Czochralski crystal pullers during monocrystalline silicon boule production. Classified in HTS 8481.80.9040 for other pneumatic actuated valves used in semiconductor material growth equipment. Provides zero-dead-volume flow control essential for purity.
Duty Rate — Mexico → United States
12%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide evidence of semiconductor end-use for potential duty relief; test pneumatic actuators for leak rates <10^-9 sccs He; label with Cv values and pressure ratings