Venturi tubes

The Venturi tube sits at the heart of the air-gas mixing assembly in atmospheric and forced-draught burners. It creates the pressure differential that draws combustion air into the gas stream, shaping the mixture ratio before it reaches the burner head. Correct flow balance across the Venturi directly affects flame stability, combustion efficiency and emissions, which is why the geometry of this part is tightly matched to each burner design.

Selecting the right Venturi tube depends on the burner series, the nominal gas throughput, the inlet and outlet diameters, any thread specification at the connection point, and the mixing angle. Honeywell components are represented in this section. If you have an order number from the original equipment or a superseded part number from another manufacturer, use it in the search field — cross-references are maintained so you can match your existing part to the correct replacement without knowing our internal catalogue code.