Steel Swing Check Valve
A swing check valve made of cast steel prevents backflow in piping systems by allowing fluid to flow in one direction only, with a hinged disc that swings open under forward pressure. Classified under HTS 8481.30.20 as a check (nonreturn) valve of iron or steel, used in industrial pipelines, water systems, and boiler applications.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of other metals like brass or bronze
Check valves of materials other than iron or steel fall under the broader 8481.30.90 subheading.
If classified as other valves rather than specifically nonreturn
General valves or appliances not explicitly check valves may shift to 8481.80 for other types.
If imported as parts of pumps rather than standalone
Pump parts, including integrated check valves, are classified under pump-specific headings in 8413.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify material certification confirming iron or steel construction to avoid reclassification under non-metallic headings
• Include pressure ratings and flow coefficients in documentation for customs valuation and compliance
Related Products under HTS 8481.30.20
Stainless Steel Ball Check Valve
Stainless steel ball check valve uses a ball and spring to block backflow in high-pressure hydraulic systems and chemical processing lines. HTS 8481.30.20 applies as it's a nonreturn valve constructed primarily of steel alloys.
Forged Steel Y-Type Check Valve
Forged steel Y-pattern check valve for oil & gas pipelines, offering angled flow path for reduced pressure drop in high-velocity applications. Falls under HTS 8481.30.20 as iron/steel check (nonreturn) valve.
Steel Silent Check Valve
Spring-assisted steel silent check valve eliminates slamming and water hammer in pump discharge lines through cushioned closure. HTS 8481.30.20 for iron/steel nonreturn valves used in municipal water systems.
Cast Steel Piston Check Valve
Heavy-duty cast steel piston check valve for power plant cooling water recirculation, with guided piston for reliable sealing. Classified HTS 8481.30.20 as steel check (nonreturn) valve.
Iron Wafer Check Valve
Space-saving iron wafer check valve sandwiched between flanges for tight piping installations in HVAC systems. HTS 8481.30.20 applies to this iron check (nonreturn) valve design.
Steel Horizontal Inline Check Valve
Horizontal inline steel check valve for compressed air mains and irrigation systems, maintaining full pipe flow alignment. Under HTS 8481.30.20 as iron/steel nonreturn valve.