Parts
Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 85.14), 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, non-electric. > Parts
Duty Rate (from China)
Subheadings
Products classified under Tariff item 8419.90.00
Acrylic Acid Reactor Salt Circulation Piping
A high-temperature piping manifold distributing molten salt coolant around an acrylic acid reactor shell, constructed from alloy for thermal shock resistance. It is a part of machinery for the treatment of materials by a process involving a change of temperature, classified under tariff item 8419.90.00.
Acrylic Acid Reactor Salt Pump Impeller
A specialized impeller for circulating molten salt coolant in acrylic acid reactor heat management systems, constructed from corrosion-resistant alloy. It is a part of machinery for the treatment of materials by a process involving a change of temperature, classified under tariff item 8419.90.00.
Anode Rod for Storage Water Heater Tanks
A magnesium sacrificial anode rod designed for installation inside storage water heater tanks to prevent corrosion. It is a dedicated part for non-electric storage water heaters, which fall under heading 84.19 as machinery for the treatment of materials by a process involving a change of temperature.
Autoclave Sterilization Chamber
The main pressure vessel component of a laboratory autoclave used for high-pressure steam sterilization of medical instruments and glassware. It is a part of machinery for the treatment of materials by a process involving a change of temperature, classified under tariff item 8419.90.00.
Burner Assembly for Gas Instantaneous Water Heaters
A pre-assembled gas burner manifold with injectors and ignition components for non-electric tankless water heaters. This assembly is integral to the combustion process in instantaneous water heaters, which are classified under heading 84.19 as machinery for temperature change treatment.
Chemical Vapor Deposition Chamber Heat Exchanger
An immersion-type heat exchanger for CVD chambers, preheating carrier gases for uniform semiconductor thin film deposition on wafers. It is a part of heat exchange units in vapor deposition temperature control, classified under 8419.90.00.
Continuous Pulp Cooker Jacket Panels
Insulated jacket panels for continuous pulp cookers that maintain cooking temperatures during wood-to-pulp conversion. These panels facilitate the heating process essential for breaking down lignocellulose in paper pulp manufacturing, falling under heading 84.19 as parts of temperature-change machinery.
Copper Water Inlet Manifold for Storage Water Heaters
A precision-machined copper manifold that distributes cold inlet water evenly in non-electric storage tank water heaters. It is a dedicated part for storage water heaters that maintain temperature via heating, falling under heading 84.19.
Czochralski Crystal Puller Heat Exchanger Assembly
A specialized heat exchanger module for Czochralski method crystal growers, controlling melt temperature gradients to produce monocrystalline silicon boules for wafers. It is classified as a part of heat exchange units under 8419.90.00.
Dip Tube for Cold Water Storage Heaters
A plastic or copper dip tube that directs incoming cold water to the bottom of a storage water heater tank. It promotes thermal layering for efficiency in non-electric units, preventing mixing with hot water. This is a dedicated part for storage water heaters under heading 84.19.
Float Zone Crystal Furnace Heat Exchanger
An RF-heated zone furnace heat exchanger for float zone purification of silicon rods into monocrystalline material for wafer production. It is classified as a part of heat exchange units in high-temperature semiconductor processing under 8419.90.00.
Flow Sensor Turbine for Instantaneous Heaters
A plastic turbine wheel with a hall effect sensor that detects water flow to activate the burner in tankless water heaters. It serves as an ignition trigger part for non-electric instantaneous water heaters, which are classified under heading 84.19.
Flue Exhaust Pipe Assembly for Instantaneous Gas Heaters
A stainless steel concentric flue pipe set that vents combustion exhaust while drawing intake air in tankless water heaters. It is an essential safety part for non-electric instantaneous heaters, classified under heading 84.19.
Fourdrinier Paper Machine Steam Box
Steam boxes mounted on Fourdrinier wire sections to heat the forming fabric and enhance water removal via evaporation in paper sheet formation. These are temperature-controlled components for continuous paper production, classified under heading 84.19.
Gas Valve Regulator for Tankless Water Heaters
A modulating gas control valve that regulates fuel flow based on water demand in instantaneous heaters. It is a specialized valve part for non-electric instantaneous water heaters, which are classified under heading 84.19.
Headbox Dilution Heater Assembly
Heater assemblies for diluting stock in paper machine headboxes, ensuring uniform temperature for consistent paper quality during formation. These are integral to temperature-controlled slurry delivery in paper production, falling under heading 84.19.
Insulation Jacket Blanket for Storage Water Heater
A fiberglass blanket with foil facing designed to wrap storage water heater tanks to reduce standby loss. It is a thermal part enhancing non-electric storage heater efficiency, falling under heading 84.19.
Kraft Pulp Process Valve Assembly
High-temperature control valve assembly for regulating steam and chemical flow in paper pulp digesters during the cooking phase. Engineered to withstand corrosive pulping liquors and elevated temperatures, this is a part of pulp processing equipment under heading 84.19.
Kraft Recovery Boiler Economizer Tubes
Economizer tube bundles for preheating feedwater using waste heat in kraft pulp recovery boilers, part of the pulp production energy cycle involving temperature processes. These are specific to paper pulp mill operations, falling under heading 84.19.
Lab Autoclave Heating Element Sheath
An Incoloy-sheathed heating element jacket for laboratory autoclaves providing chamber preheating, corrosion-resistant to wet steam environments. It is a part of machinery for the treatment of materials by a process involving a change of temperature, classified under tariff item 8419.90.00.
Laboratory Autoclave Door Assembly
A sealable door with locking mechanism for lab autoclaves used in sterilizing microbiological media and equipment. It is a part of machinery for the treatment of materials by a process involving a change of temperature, classified under tariff item 8419.90.00.
Paperboard Calender Steam Chest
A steam chest that heats calender rolls in paperboard finishing lines, controlling roll temperature for sheet glazing and density. It is a part of machinery for the treatment of materials by a process involving a change of temperature, falling under tariff item 8419.90.00.
Paperboard Dryer Cylinder Shell
A cast iron shell replacement for steam-heated dryer cylinders in paperboard machines, where hot steam evaporates moisture from wet paper webs. It is a critical component for the drying phase involving temperature change, classified as a part under 8419.90.00.
Paper Machine Headbox Heating Element
Electric heating elements for maintaining optimal slurry temperature in the headbox of paperboard manufacturing machines. These ensure consistent paper formation by controlling temperature during the web-forming process, classified as parts under 8419.90.00.
Paper Pulp Digester Parts Kit
A replacement parts kit for continuous pulp digesters used in the kraft process to cook wood chips into paper pulp under high temperature and pressure. The kit includes pressure seals, valves, and heating elements, classified as parts under 8419.90.00.
Paper Pulp Evaporator Heat Exchanger
Plate heat exchangers for concentrating black liquor in pulp evaporators by transferring heat for water evaporation. These are critical for energy recovery in paper pulp mills involving temperature change processes, classified as parts under 8419.90.00.
Plasma Etch Chamber Heat Exchanger Manifold
A multi-channel heat exchanger manifold for plasma etch chambers, recovering heat from exhaust gases in semiconductor wafer patterning equipment. It is classified as a heat exchange component in temperature-controlled processes under 8419.90.00.
Pulp Bleach Tower Heating Coils
Titanium heating coils for maintaining reaction temperatures in multi-stage pulp bleaching towers during paper pulp brightening. These coils withstand harsh chemical environments and high temperatures in pulp processing, classified as parts under 8419.90.00.
Pulp Refiner Heating Jacket
Heating jackets for double-disc pulp refiners that maintain stock temperature during mechanical fiber development for paper pulp. These ensure optimal refining conditions via controlled heating, classified as parts under 8419.90.00.
Pulp Washing Press Steam Valve
Steam control valves for pulp washing presses that heat and squeeze pulp mats to remove spent cooking liquors in paper pulp production. These valves are designed for high-pressure, high-temperature operation specific to pulp processing, classified as parts under 8419.90.00.
Semiconductor Vapor Phase Epitaxy Reactor Heat Exchanger
A shell-and-tube heat exchanger for VPE reactors, condensing precursor vapors and controlling epitaxial layer growth temperatures on wafers. It is classified as a heat exchange part in semiconductor thin-film processing under 8419.90.00.
Semiconductor Wafer Cooling Heat Exchanger Coil
A finned-tube heat exchanger coil designed specifically for cooling chambers in semiconductor wafer processing equipment, facilitating rapid temperature control during etching and deposition processes. It is a part of machinery for the treatment of materials by a process involving a change of temperature, classified under tariff item 8419.90.00.
Silicon Ingot Annealing Oven Heat Exchanger
A recuperative heat exchanger for annealing furnaces, recovering heat during silicon ingot stress relief post-crystal growth for wafer production. It is a part of machinery for the treatment of materials by a process involving a change of temperature, classified under tariff item 8419.90.00.
Stainless Steel Heat Exchanger Coil for Instantaneous Water Heaters
A coiled stainless steel tube assembly that transfers heat from combustion gases to water in tankless instantaneous water heaters. It is a core component specifically designed for non-electric instantaneous heaters, classified under heading 84.19.
Stock Chest Agitator Heater
Immersion heaters for stock chests holding paper pulp slurry between processing stages, preventing temperature drops and maintaining consistency. These are essential for temperature-controlled pulp handling in paper production, classified as parts under 8419.90.00.
Temperature Sensor Probe for Instantaneous Water Heaters
A thermocouple probe that monitors outlet water temperature in gas instantaneous heaters for flame modulation. It is a dedicated control part for non-electric water heaters, ensuring precise temperature control, and falls under heading 84.19.
Wafer Crystal Grinder Coolant Heat Exchanger
A compact coolant-to-water heat exchanger for crystal grinders, maintaining boule grinding temperatures to precise diameters for wafer slicing. It is a part of machinery for the treatment of materials by a process involving a change of temperature, classified under tariff item 8419.90.00.
Wafer Lapping Process Chiller Heat Exchanger Plate
A brazed plate heat exchanger for chillers in wafer lapping and polishing machines, removing heat from coolant to achieve nanoscale flatness tolerances. It is a part of machinery for the treatment of materials by a process involving a change of temperature, classified under tariff item 8419.90.00.
Wafer Slicing Saw Coolant Radiator Core
A tube-fin radiator core for coolant systems in wire saws slicing silicon boules into wafers, dissipating heat from high-speed diamond wire cutting. It is a part of machinery for the treatment of materials by a process involving a change of temperature, classified under tariff item 8419.90.00.
Yankee Dryer Steam Joint
Rotary steam joints for supplying steam to Yankee dryer cylinders in tissue paper production, enabling high-speed drying via evaporation. These are precision-engineered for paper machine rotation and temperature maintenance, classified as parts under 8419.90.00.