0558005091 - ESAB 1566HS Size 8 MAPP/Propylene Heating Tip

High-Efficiency Heating with the ESAB 1566HS-8

The ESAB 1566HS-8 Heating Nozzle (SKU: 0558005091) is a specialized oxy-fuel component engineered for industrial heating applications requiring the use of MAPP gas or FG-2 (Propylene). Unlike standard acetylene tips, this nozzle is geometrically designed to optimize the combustion characteristics of alternative fuel gases, which typically require different mixing ratios and exit velocities to maintain a stable, high-temperature flame. The "HS" designation indicates a High Speed or High Service design, intended to deliver a substantial volume of heat rapidly to the workpiece, making it an essential tool for heavy fabrication environments.

Constructed from high-grade alloys, the 1566HS-8 features a multi-flame head, often referred to as a "rosebud," which distributes heat over a wider surface area compared to single-orifice welding tips. This distribution is critical for processes such as preheating prior to welding, where maintaining a specific interpass temperature is vital for preventing cracking in high-strength steels. The size 8 configuration offers a significant BTU output, suitable for heating medium-to-heavy sections of steel plate, pipe, and castings. The nozzle's internal channels are precision-machined to ensure laminar gas flow, reducing turbulence and minimizing the risk of backfire, even during prolonged use at high heat settings.

One of the primary technical advantages of using the 1566HS-8 with MAPP or Propylene is the safety and storage benefit over acetylene. Propylene-based gases do not suffer from the withdrawal rate limitations of acetylene cylinders (the 1/7th rule), allowing operators to run this large size 8 heating tip continuously without starving the flame or risking solvent withdrawal from the cylinder. This makes the ESAB 1566HS-8 a highly efficient choice for field operations and shops where maximizing cylinder utility and safety is paramount. The nozzle attaches securely to compatible heavy-duty torch handles, ensuring a leak-proof seal and consistent performance.

In summary, the ESAB 1566HS-8 represents a convergence of durability and fluid dynamic engineering. It provides the thermal intensity required for bending, straightening, and shrinking metal, while leveraging the specific combustion advantages of modern alternative fuel gases. It is a critical component for any MRO or fabrication toolkit focused on heavy structural work.