Of iron or steel
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: > Parts: > Of hand operated and check appliances: > Of iron or steel
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 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 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(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Products classified under HTS 8481.90.30.00
Steel Ball Valve for Semiconductor Wafer Processing
A hand-operated steel ball valve designed for controlling gas flow in crystal growers and pullers used in semiconductor boule production. It falls under HTS 8481.90.3000 as a part of iron or steel for hand-operated valves in high-purity semiconductor manufacturing equipment. Precision-engineered to handle corrosive gases without contamination.
Stainless Steel Check Valve for Wafer Slicing Saw Coolant Lines
Hand-operated check valve of stainless steel preventing backflow in coolant systems of wafer slicing saws for semiconductor boule processing. Classified under HTS 8481.90.3000 as a steel part of check appliances in precision semiconductor equipment. Ensures contamination-free operation during wafer slicing.
Iron Gate Valve Body for Crystal Grinder Gas Supply
Steel gate valve body part for hand-operated control of process gases in crystal grinders that shape semiconductor boules to wafer diameters. HTS 8481.90.3000 covers iron or steel parts of such hand-operated appliances in semiconductor prep equipment. Critical for maintaining precise flat grinding tolerances.
Steel Diaphragm Valve for Wafer Lapping Slurry Control
Hand-operated steel diaphragm valve component regulating abrasive slurry flow in wafer lappers and polishers for semiconductor surface flatness. Under HTS 8481.90.3000 as steel part of hand-operated valves in wafer preparation equipment. Prevents particle contamination during critical polishing steps.
Stainless Steel Needle Valve for Float Zone Crystal Puller
Precision steel needle valve part for fine flow control of argon gas in float zone crystal pullers producing monocrystalline semiconductor material. HTS 8481.90.3000 for iron/steel parts of hand-operated appliances in wafer manufacturing equipment. Essential for zone refining purity.
Steel Butterfly Valve Disc for Wafer Grinder Coolant
Replacement steel disc for hand-operated butterfly valves controlling coolant in wafer grinders processing semiconductor crystal boules. Classified HTS 8481.90.3000 as steel part of hand-operated valve appliances. Maintains flatness tolerances on wafers.
Iron Pressure Reducing Valve Seat for Czochralski Pullers
Steel seat insert for hand-operated pressure-reducing valves maintaining stable argon pressure in Czochralski crystal pullers for silicon wafers. HTS 8481.90.3000 covers such iron/steel parts in semiconductor growth equipment. Critical for boule uniformity.
Steel Check Valve Spring for Wafer Polisher Slurry Lines
High-tensile steel spring component in hand-operated check valves for unidirectional slurry flow in semiconductor wafer polishers. Under HTS 8481.90.3000 as steel part of check appliances in wafer prep equipment. Ensures mirror-finish wafer surfaces.
Stainless Steel Plug Valve for Crystal Grinder Vacuum Lines
Steel plug component for hand-operated valves isolating vacuum in crystal grinders shaping semiconductor boule flats for conductivity indication. HTS 8481.90.3000 for such precision steel parts. Vital for resistivity control.
Steel Thermostatic Valve Actuator for Wafer Slicer Cooling
Hand-operated steel actuator housing for thermostatically controlled valves regulating coolant temperature in wafer slicing saws. Even though thermostat-controlled, parts of hand-operated appliances fall under HTS 8481.90.3000 when steel. Maintains precise kerf temperatures.