Safety or relief valves
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: > Safety or relief valves
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 8481.40.00.00
ASME Certified Pressure Relief Valve
A safety valve designed to automatically release excess pressure from boilers and pressure vessels to prevent explosions, featuring spring-loaded mechanism for precise set pressure. Classified under HTS 8481.40.00.00 as it functions specifically as a safety or relief valve for pipes, tanks, and boilers. Meets ASME standards for industrial steam systems.
Spring-Loaded Safety Valve for Air Compressors
Spring-loaded relief valve that pops open at predetermined pressure to vent excess air from compressor tanks, protecting against over-pressurization. Falls under HTS 8481.40.00.00 due to its dedicated safety relief function for compressed air systems in industrial pipes and tanks.
Thermal Relief Valve for Hot Water Heaters
Valve that relieves pressure buildup from thermal expansion in hot water storage tanks, preventing tank rupture. Classified in HTS 8481.40.00.00 as a safety relief valve for water heating systems and pressure vessels.
Pilot-Operated Pressure Relief Valve
High-capacity relief valve using a pilot mechanism for accurate set-point operation in large pressure vessels and pipelines. HTS 8481.40.00.00 classification applies as it serves safety relief functions for industrial gas and steam systems.
Stainless Steel Safety Valve for Chemical Tanks
Corrosion-resistant stainless steel relief valve for hazardous chemical storage tanks, discharging vapors or liquids at overpressure. Meets HTS 8481.40.00.00 as safety valve for chemical processing tanks and vessels.
Full Lift Safety Valve for Steam Boilers
Full-lift pop-type safety valve providing maximum discharge area for rapid steam relief from industrial boilers. Classified under HTS 8481.40.00.00 for its critical safety function in boiler shells and pressure piping.
Cryogenic Relief Valve for LNG Tanks
Low-temperature safety valve for liquefied natural gas storage tanks, relieving boil-off gas during overpressure events. HTS 8481.40.00.00 applies to its safety relief role in cryogenic pressure vessels.
Vacuum Relief Valve for Fuel Storage Tanks
Valve preventing tank collapse by admitting air during vacuum conditions in underground fuel storage tanks. Functions as safety relief valve under HTS 8481.40.00.00 for petroleum storage vats.
High-Pressure Safety Valve for Hydraulic Systems
Safety valve limiting maximum pressure in high-pressure hydraulic power units and cylinders. Classified HTS 8481.40.00.00 for hydraulic tank and pipe safety relief applications.
Flanged Relief Valve for Pipeline Stations
ANSI B16.5 flanged safety valve for natural gas compressor stations and pipeline pressure regulation points. HTS 8481.40.00.00 designation for pipeline safety relief service.