Other
Taps, cocks, valves and similar appliances, for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves; parts thereof: > Other appliances: > Other > Other: > Other
Duty Rate (from China)
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
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)
Products classified under HTS 8481.80.90.50
Wafer Grinder Coolant Control Valve
Precision solenoid valve for metering diamond slurry coolant in wafer grinding and lapping machines during semiconductor wafer preparation. HTS 8481.80.9050 covers such other appliances in wafer prep equipment pipelines. Features low-particle generation for flatness-critical processes.
Wafer Polisher Slurry Delivery Valve
Diaphragm valve for precise slurry delivery in chemical mechanical planarization (CMP) polishers preparing wafer surfaces for fabrication. Under HTS 8481.80.9050 as other semiconductor wafer prep appliance. Prevents agglomeration in nano-scale polishing.
Ion Implanter Process Gas Isolation Valve
Fast-acting isolation valve for dopant gas lines in high-energy ion implanters used after wafer preparation. HTS 8481.80.9050 covers other valves in semiconductor processing equipment. Millisecond response prevents source contamination.
Wafer Lapping Machine Pressure Valve
Hydraulic pressure regulating valve for maintaining consistent force in double-side wafer lappers achieving dimensional tolerances. Classified in HTS 8481.80.9050 for semiconductor wafer preparation appliances. Ensures parallelism within microns.
Epitaxial Reactor Precursor Gas Valve
UHP precursor gas delivery valve for MOCVD epitaxial reactors growing compound semiconductor layers on prepared wafers. HTS 8481.80.9050 for other semiconductor processing appliances. Heated design prevents condensation.
Crystal Boule Diameter Grinder Coolant Valve
Metering valve controlling coolant to diamond wheels grinding semiconductor crystal boules to exact wafer diameters. Under HTS 8481.80.9050 as wafer manufacturing preparation appliance. Critical for slicing yield.
Wafer Flatness Polisher Vacuum Valve
Vacuum chuck control valve maintaining wafer hold-down during back-side polishing for ultimate flatness in semiconductor processing. HTS 8481.80.9050 other appliance for wafer polishers. Sub-micron flatness capability.
Gallium Arsenide Crystal Puller Argon Valve
Purge gas valve supplying ultra-pure argon ambient for GaAs Czochralski crystal growth equipment in compound semiconductor manufacturing. Classified HTS 8481.80.9050 per statistical notes covering GaAs processing. Pyrolytic coating option.
Semiconductor Wafer Edge Grinder Water Valve
Precision water control valve for edge grinding stations removing damaged crystal layer post-slicing/polishing. HTS 8481.80.9050 for wafer preparation equipment appliances. Prevents chipping for yield improvement.
Wire Saw Slurry Return Valve
Slurry recirculation control valve in multi-wire saws slicing semiconductor boules into thousands of wafers simultaneously. Under HTS 8481.80.9050 per statistical note (a)(ii)(B) wafer slicing equipment. Manages PEG slurry at high pressures.
Semiconductor Wafer Processing Gate Valve
A precision gate valve designed for controlling gas flow in semiconductor wafer processing equipment, such as crystal growers and etch chambers. It falls under HTS 8481.80.9050 as an other appliance for pipes in high-vacuum systems used in semiconductor manufacturing. Made from corrosion-resistant materials to handle ultra-pure gases.
Czochralski Crystal Puller Process Valve
Stainless steel process valve used in Czochralski method crystal growers to regulate argon and dopant gas flows during monocrystalline silicon boule production. Classified in HTS 8481.80.9050 as other valves for semiconductor wafer manufacturing pipes. Ensures contamination-free operation in high-temperature environments.
Float Zone Crystal Furnace Gas Valve
High-purity bellows-sealed valve for inert gas control in float zone method silicon crystal pullers, preventing impurities in monocrystalline growth. Falls under HTS 8481.80.9050 for other semiconductor manufacturing appliances. Withstands RF heating environments.
Wafer Slicing Saw Coolant Throttle Valve
Manual throttle valve regulating coolant flow to wire saw blades during wafer slicing from silicon boules in semiconductor prep equipment. Classified HTS 8481.80.9050 as other valve for wafer manufacturing pipes. Ensures precise kerf control and surface quality.
Semiconductor Crystal Grinder Air Valve
Pneumatic air control valve for crystal boule grinders that create precise diameters and flats indicating conductivity type. HTS 8481.80.9050 for other appliances in wafer preparation equipment. Low-vibration design for metrology accuracy.