819-1 - 819 Style Size 1 Propane Cutting Nozzle for Air Liquide Torches

Optimized for Alternate Fuels

Welders and fabricators know that switching from acetylene to propane requires more than just changing the tank; it requires the right consumables. The 819-1 Cutting Tip is the correct tool for the job when running Air Liquide style torches with Propane or Natural Gas. This Size 1 nozzle is engineered with a two-piece design—a standard requirement for alternate fuels—to create the turbulence necessary for proper mixing and flame anchoring. The result is a high-velocity preheat flame that resists blowing out, even when the torch is moved aggressively across the workpiece.

Technical Specifications & Performance

The 819-1 is rated for cutting steel plate up to 1 inch (25mm) thick. The tip utilizes a heavy copper outer shell to resist spatter adhesion and reflected heat, which is critical when piercing or working in confined spaces. The inner brass insert features precision-milled splines that distribute the preheat gas mixture evenly around the cutting oxygen bore. This ensures a concentric flame pattern that preheats the steel uniformly, regardless of the direction of travel. The cutting oxygen bore is drilled and swaged to minimize turbulence in the oxygen stream, resulting in a straight, clean kerf with sharp top edges and minimal slag on the bottom.

Operational Tips

When using this propane tip, it is recommended to set your oxygen and fuel pressures according to the torch manufacturer's charts for Size 1 tips. Generally, propane requires a slightly different lighting procedure than acetylene; allow the gas to flow for a moment to purge the air before igniting, and adjust to a neutral flame where the inner cones are distinct and bright. Because propane has a lower flame temperature than acetylene but a higher total heat output (BTUs), the preheat time may be slightly longer, but the cut speed on thicker materials is often comparable once the cut is established. The 819-1's recessed face design also helps protect the orifice from damage if the tip accidentally touches the plate.

Cost-Effective Replacement

This generic 819-1 tip provides a smart alternative to expensive OEM consumables without sacrificing cut quality. It fits securely into the torch head, seating metal-to-metal for a leak-proof connection. For welders looking to reduce operating costs by utilizing propane for cutting operations, this tip is an essential addition to your torch kit.