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.
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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 containing significant non-steel components like plastic seats
Predominantly non-steel valves shift out of the iron/steel specific subheading.
If for gas turbine or engine applications
Specialized check valves integral to turbomachinery classify with those gas components.
If thermostatically controlled
Thermostatic valves have separate classification regardless of check function.
Not sure which classification is right?
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Import Tips & Compliance
• Specify stainless steel grade (e.g
• 304 or 316) in invoices to confirm steel classification
• Include hydrostatic test reports for high-pressure models to avoid delays
• Watch for misdeclaration as sanitary fittings, which may require FDA compliance
Related Products under HTS 8481.30.20
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.
Threaded Steel Check Valve
NPT threaded steel check valve for instrumentation and small bore tubing in process control systems. HTS 8481.30.20 for miniature iron/steel check valves.