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: > Parts: > 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]
Subheadings
Products classified under HTS 8481.90.90
Stainless Steel Ball Valve Replacement Seat
A precision-machined stainless steel seat designed specifically as a replaceable part for industrial ball valves used in piping systems. It ensures a tight seal between the ball and body under high pressure, classified under HTS 8481.90.90 as a part of valves for pipes and tanks, distinct from complete valves or assemblies.
Brass Gate Valve Stem
A threaded brass stem with handwheel attachment point for operating rising gate valves in water and gas pipelines. This part controls the gate disc movement to regulate flow, falling under HTS 8481.90.90 as a valve part for pipes, not a complete appliance.
Pneumatic Actuator Valve Diaphragm
A reinforced rubber diaphragm for pneumatic control valves that flexes to position the valve plug under air pressure. Used in process industries for throttling flow in pipelines, classified as a part under HTS 8481.90.90.
Thermostatic Radiator Valve Head
Plastic and metal thermostatic sensor head that automatically adjusts flow in hydronic heating systems based on room temperature. Attaches to radiator valve bodies, classified under HTS 8481.90.90 as a part of thermostatically controlled valves.
Semiconductor Wafer Fab Check Valve Poppet
Ceramic poppet for high-purity check valves preventing backflow in gas lines of semiconductor wafer processing equipment. Precision-ground for ultra-clean environments, classified under general valve parts HTS 8481.90.90 unless proven as machinery-specific.
Industrial Butterfly Valve Disc
Stainless steel disc with shaft holes for quarter-turn butterfly valves used in HVAC and chemical processing pipelines. Provides flow control through rotation within the pipe body, under HTS 8481.90.90 as a valve part.
Pressure Reducing Valve Spring
High-tensile alloy steel compression spring that maintains set pressure in diaphragm-operated reducing valves for water systems. Calibrated for specific spring rates, classified as a valve part under HTS 8481.90.90.
Cryogenic LNG Valve Packing Gland
PTFE and graphite composite packing gland for cryogenic valves handling LNG at -196°C in tanker and storage systems. Compresses sealing rings around stem, under HTS 8481.90.90 as a valve part.
Solenoid Valve Armature Assembly
Magnetic stainless steel armature with attached plunger for electrically actuated solenoid valves in automation systems. Moves under coil energization to open/close ports, classified as valve part HTS 8481.90.90.