Boiler Pressure Relief Valve
Safety pressure relief valve assembly for central heating boilers, releasing excess pressure to prevent explosions. Boiler-specific mounting and calibration. Under HTS 8403.90.00.00 as parts.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If safety valves for general pressure systems
Valves not dedicated to boilers are under general safety/relief valve provisions.
If for liquid pumps in heating systems
Pump-specific valves go under pump parts heading.
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
• Must meet ASME Boiler Code Section IV certification; test certificates required at entry; avoid generic valve classification under 8481
Related Products under HTS 8403.90.00.00
Central Boiler Manifold Header
Forged steel header manifold distributing hot water from central heating boilers to heating zones. Threaded ports specific to boiler sections. HTS 8403.90.00.00 part.
Boiler Low Water Cutoff Switch
Electronic low water cutoff probe switch that shuts down boiler burner when water level drops dangerously low. Specific to central heating boilers. 8403.90.00.00.
Cast Steel Boiler Grate Bars
Replaceable cast steel bars forming the grate in solid fuel central heating boilers for supporting combustion bed. Specific alloy for high heat. HTS 8403.90.00.00.
Boiler Draft Inducer Blower Housing
Aluminum housing for the induced draft fan in gas-fired central heating boilers, promoting proper venting. OEM-specific mounting. Under 8403.90.00.00.
Cast Iron Boiler Heat Exchanger
A cast iron heat exchanger designed specifically as a replacement part for central heating boilers not of heading 8402. It facilitates the transfer of heat from combustion gases to water in the boiler system. Classified under HTS 8403.90.00.00 as a dedicated part of central heating boilers.
Stainless Steel Boiler Burner Assembly
Stainless steel burner assembly tailored for central heating boilers, controlling fuel combustion. It includes nozzle and ignition components integral to boiler operation. Falls under HTS 8403.90.00.00 as parts thereof.