Other
Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 8514), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting, distilling, rectifying, sterilizing, pasteurizing, steaming, drying, evaporating, vaporizing, condensing or cooling, other than machinery or plant of a kind used for domestic purposes; instantaneous or storage water heaters, nonelectric; parts thereof: > Machinery for liquefying air or other gases: > 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 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 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(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8419.60.50.00
Cryogenic Oxygen Liquefier COL-1000
Machinery that purifies and liquefies oxygen from air using Claude cycle refrigeration, producing liquid oxygen for medical and industrial oxygen supply. It qualifies under HTS 8419.60.5000 as other gas liquefaction equipment involving cooling and condensation processes. Key components include turbo-expanders and plate-fin heat exchangers.
Air Separation Unit ASU-2000
Industrial machinery designed to separate atmospheric air into its primary components—nitrogen, oxygen, and argon—through cryogenic distillation involving cooling and liquefaction of air. It falls under HTS 8419.60.5000 as 'other' machinery for liquefying air or other gases, distinct from domestic equipment. This process changes the temperature of air to produce liquid gases for industrial applications.
Nitrogen Liquefaction Plant NLI-500
Compact plant for liquefying nitrogen gas from compressed air via cryogenic cooling and expansion cycles, used in laboratories and small-scale industrial settings. Classified under HTS 8419.60.5000 for other machinery involving temperature change for gas liquefaction. It employs heat exchangers and expanders to achieve liquid nitrogen at -196°C.
Argon Gas Liquefaction Skid ALS-300
Modular skid-mounted system for recovering and liquefying argon from air separation processes via low-temperature distillation and cooling. Falls under HTS 8419.60.5000 for other machinery liquefying gases through temperature change. Used in welding gas production and semiconductor atmospheres.
Portable Air Liquefier PAL-150
Mobile unit for on-site liquefaction of air into liquid nitrogen and oxygen, utilizing Stirling cycle cooling for field operations in research and emergency medical supply. Classified in HTS 8419.60.5000 as other non-domestic gas liquefaction machinery. Designed for rugged transport with compact heat exchangers.
Industrial Helium Recovery Liquefier HRL-400
System for recapturing and reliquefying helium gas from industrial processes like MRI cooling and balloon filling via Gifford-McMahon cycle. Under HTS 8419.60.5000 as other gas liquefaction equipment, excluding specific helium provisions. Features pulse tube cryocoolers for efficiency.
CO2 Liquefaction Machine CLM-750
Equipment for converting gaseous CO2 from fermentation or combustion capture into liquid form through compression cooling and condensation for beverage carbonation and dry ice production. Fits HTS 8419.60.5000 for other gas liquefaction via temperature processes. Includes intercoolers and separators.
Methane Liquefier for LNG Mini-Plant MLNG-250
Small-scale natural gas liquefaction plant using mixed refrigerant cycle to produce LNG from pipeline methane for remote power generation. Classified under HTS 8419.60.5000 as other machinery for liquefying gases via cooling and phase change. Scalable for off-grid applications.