Parts
Central heating boilers other than those of heading 84.02. > Parts > Parts
Duty Rate (from China)
Products classified under Tariff item 8403.90.00.00
Boiler Aquastat Control Sensor
A sensor probe that monitors water temperature in central heating boilers, sending signals to control burner operation. It is designed specifically for integration into boiler systems, making it a part of the boiler rather than a standalone control device.
8403.90.00Boiler Circulator Pump Housing
A cast iron housing for the circulator pump used in hydronic central heating boiler systems. It is designed to be mounted within the boiler loop, circulating water as part of the boiler's operation.
8403.90.00Boiler Control Thermostat Module
An electronic thermostat module designed exclusively for regulating temperature in central heating boilers. It integrates into the boiler's control system and is not a general-purpose thermostat.
8403.90.00Boiler Draft Inducer Blower Housing
An aluminum housing for the induced draft fan in gas-fired central heating boilers, promoting proper venting of combustion gases. It is designed with OEM-specific mounting for particular boiler models.
8403.90.00Boiler Low Water Cutoff Switch
An electronic low water cutoff probe switch that shuts down the boiler burner when water levels drop dangerously low. It is specifically designed for central heating boilers to ensure safe operation.
8403.90.00Boiler Pressure Relief Valve
A safety pressure relief valve assembly for central heating boilers, releasing excess pressure to prevent explosions. It is boiler-specific in mounting and calibration, ensuring it functions only within boiler systems.
8403.90.00Boiler Sight Glass Assembly
A glass tube assembly with brass fittings for visually monitoring water levels in central heating boilers. It is designed with boiler-specific pressure ratings and mounting.
8403.90.00Cast Iron Boiler Heat Exchanger
A cast iron heat exchanger designed specifically as a replacement part for central heating boilers not of heading 8402. It transfers heat from combustion gases to water in the boiler system.
8403.90.00Cast Steel Boiler Grate Bars
Replaceable cast steel bars forming the grate in solid fuel central heating boilers, supporting the combustion bed. They are made of a specific alloy for high heat resistance and are designed for boiler use.
8403.90.00Central Boiler Expansion Tank
A pressurized diaphragm expansion tank for absorbing water volume changes in central heating boiler systems. It features boiler-integrated mounting brackets and is designed for boiler operation.
8403.90.00Central Boiler Flue Gas Vent Pipe
A specialized stainless steel vent pipe for exhausting combustion gases from central heating boilers. It is engineered for direct attachment to the boiler exhaust manifold.
8403.90.00Central Boiler Manifold Header
A forged steel header manifold distributing hot water from central heating boilers to heating zones. It has threaded ports specific to boiler sections.
8403.90.00Stainless Boiler Feedwater Valve
An automatic stainless steel valve for maintaining water levels in central heating boilers. It includes a float mechanism specific to boiler pots.
8403.90.00Stainless Steel Boiler Burner Assembly
A stainless steel burner assembly tailored for central heating boilers, controlling fuel combustion. It includes nozzle and ignition components integral to boiler operation.
8403.90.00Steel Boiler Firebox Door
A heavy-duty steel door for accessing the firebox in solid fuel central heating boilers. It includes hinges and seals specific to boiler design.