261-2 - Airco Style 261-2 Propane Cutting Tip, Size 2, Heavy Preheat

Technical Overview of the Airco Style 261-2 Cutting Tip

The Generic Airco Style 261-2 is a specialized oxy-fuel cutting tip designed for use with alternative fuels such as Propane and Natural Gas. Unlike standard acetylene tips, the 261 series utilizes a two-piece construction consisting of a brass inner member with splined gas passages and a copper outer shell. This configuration is essential for creating the turbulence required to properly mix and anchor the flame when using slower-burning fuel gases.

This specific model is a Size 2 tip, typically rated for cutting mild steel thicknesses in the range of 1 inch to 1.5 inches (approx. 25-38mm). The 'Heavy Preheat' designation indicates that the tip is engineered with aggressive preheat ports to compensate for the lower heat release rate of the primary flame cone in propane combustion. This ensures that the steel reaches ignition temperature rapidly, reducing dwell time before the cut can commence.

The tip is fully compatible with Airco style torches and cutting attachments. The seating mechanism ensures a leak-proof seal when tightened correctly into the torch head. Maintenance is simplified by the two-piece design; the outer shell can be slid off to expose the inner splines, allowing operators to easily remove slag or carbon buildup using a soft wire brush or chemical cleaner, rather than relying solely on tip drills which can damage the preheat orifices.

Key Technical Specifications:

• Series: 261 (Propane/Natural Gas)
• Size: 2
• Construction: 2-Piece (Brass Inner, Copper Outer)
• Preheat: Heavy / High Capacity
• Torch Compatibility: All standard Airco style hand and machine torches