Carbon Steel Lift Check Valve
This carbon steel lift check valve uses a guided plunger that lifts with forward flow and seats to block reverse flow, ideal for high-pressure applications. Classified in HTS 8481.30.20.90 as a steel check (nonreturn) valve for pipes, boilers, and tanks. It ensures unidirectional flow in industrial fluid systems.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of cast iron instead of steel
Cast iron check valves fall under the iron subheading, differentiated by material in 8481.30.
If imported as valve components like seats or discs
Individual parts of check valves classify separately from complete assemblies.
If designed specifically for pump discharge
Pump parts may classify under Chapter 84 if integral to pump function rather than general pipe use.
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Import Tips & Compliance
• Provide mill test certificates proving carbon steel composition to prevent reclassification as stainless or alloy steel
• Label with maximum pressure and temperature ratings to comply with ASME standards and facilitate CBP review
• Bundle with installation instructions but avoid packaging as sets to maintain individual valve classification
Related Products under HTS 8481.30.20.90
Stainless Steel Swing Check Valve
A stainless steel swing check valve prevents backflow in piping systems by using a hinged disc that swings open with forward flow and closes against reverse flow. It is classified under HTS 8481.30.20.90 as a check (nonreturn) valve made of steel, designed for pipes, tanks, and similar applications. This valve is commonly used in water, oil, and gas systems for reliable one-way flow control.
316 Stainless Steel Ball Check Valve
A 316 stainless steel ball check valve employs a ball that rises with flow and seats to prevent backflow, suitable for corrosive environments. It falls under HTS 8481.30.20.90 as a steel nonreturn valve for tanks, vats, and piping systems. Corrosion resistance makes it ideal for chemical processing.
Steel Spring-Loaded Check Valve
This steel spring-loaded check valve uses a spring to assist disc seating for immediate backflow prevention in vertical installations. HTS 8481.30.20.90 covers it as a steel check valve for boilers and pipes. The spring ensures reliable operation under varying pressures.
Duplex Stainless Steel Dual Plate Check Valve
Compact duplex stainless steel dual plate check valve with two spring-loaded plates for low cracking pressure and minimal head loss. Classified HTS 8481.30.20.90 as steel nonreturn valve for high-corrosion industrial pipes and tanks. Excellent for slurry and high-velocity flows.
API 6D Steel Check Valve
Heavy-duty steel check valve compliant with API 6D standards for oil and gas pipeline service, featuring full bore design. HTS 8481.30.20.90 for steel nonreturn valves in high-pressure tank and pipe applications. Designed for severe service conditions.
Sanitary Stainless Steel Check Valve
Tri-clamp connected stainless steel check valve for hygienic applications in food, beverage, and pharmaceutical processing. Meets 3A sanitary standards under HTS 8481.30.20.90 as steel check valve for tanks and pipes. Polished finish prevents bacterial growth.