Of iron
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: > Check (nonreturn) valves: > Of iron or steel > Of iron
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 8481.30.20.10
Iron Swing Check Valve
A swing-type check valve made entirely of cast iron, featuring a hinged disc that swings open with forward flow and closes to prevent backflow in piping systems. Classified under HTS 8481.30.20.10 as a nonreturn valve of iron, designed for use in water, wastewater, or industrial pipelines to protect pumps and equipment from reverse flow.
Cast Iron Lift Check Valve
Cast iron lift check valve with a piston-like disc that lifts vertically to allow flow and drops to seal against backflow, ideal for horizontal or vertical installations in plumbing systems. It falls under HTS 8481.30.20.10 due to its iron construction and nonreturn design for pipes and tanks.
Ductile Iron Silent Check Valve
Ductile iron silent check valve designed to minimize water hammer with a spring-assisted disc for quiet operation in HVAC piping systems. It qualifies under HTS 8481.30.20.10 as an iron nonreturn appliance for boilers and tanks.
Iron Foot Check Valve
Cast iron foot check valve with integral strainer for well pump suction lines, combining filtration and backflow prevention. Under HTS 8481.30.20.10 as an iron nonreturn appliance for tanks and pipes.
Iron Spring Loaded Check Valve
Spring-loaded cast iron check valve for quick response in variable flow pumping systems, ideal for sewage ejector applications. Classified HTS 8481.30.20.10 as iron nonreturn for tanks.
Malleable Iron Check Valve
Malleable cast iron check valve with superior ductility for vibration-prone HVAC ducts, preventing air backdraft. HTS 8481.30.20.10 for iron pipe appliances.
Iron Disc Check Valve for Boilers
Heavy cast iron disc check valve rated for boiler feedwater lines, ensuring no steam backflow into feed pumps. Under HTS 8481.30.20.10 explicitly for boiler shells.
Compact Iron Check Valve 1/2-inch
1/2-inch compact cast iron check valve for residential water heaters, compact design fits tight spaces. HTS 8481.30.20.10 for tank nonreturn valves.
Iron Y-pattern Check Valve
Y-pattern cast iron check valve for angled flow in tight manifold spaces, common in chemical vats. Classified HTS 8481.30.20.10 for vat pipes.
Iron Dual Plate Check Valve
Compact dual-plate check valve constructed from ductile iron, using two spring-loaded plates that open with flow and snap shut to prevent backflow, suited for high-velocity applications in water lines. HTS 8481.30.20.10 applies as it's an iron nonreturn valve for pipes.
Gray Iron Flanged Check Valve
Gray cast iron check valve with flanged ends for bolting to pipe systems, employing a clapper mechanism to block backflow in municipal water distribution networks. Classified in HTS 8481.30.20.10 for iron check valves used in tanks and pipes.
Cast Iron Ball Check Valve
Simple cast iron ball check valve where a ball seats against a cone to stop backflow, commonly used in sump pump discharge lines. Falls under HTS 8481.30.20.10 for its iron body and nonreturn mechanism in pipe applications.
Iron Threaded Check Valve
Threaded-end cast iron check valve for easy installation in low-pressure irrigation systems, preventing back-siphonage with a poppet design. HTS 8481.30.20.10 covers this iron nonreturn valve for vats and pipes.
Heavy Duty Iron Wafer Check Valve
Heavy-duty wafer-style check iron valve sandwiched between pipe flanges, used in industrial slurry lines to resist abrasion. Classified as HTS 8481.30.20.10 for iron check valves in harsh pipe environments.
Cast Iron Inline Check Valve 2-inch
2-inch cast iron inline check valve for compressed air lines in workshops, ensuring unidirectional flow with minimal pressure drop. HTS 8481.30.20.10 for iron check valves in boiler and pipe systems.