998819 - Esab 550-A Multi-Flame Heating Tip for W-17 Torch

Technical Overview of the Esab 998819 Heating Head

The Esab 998819 is a specialized heating head, designated as size #55 or 550-A, engineered for heavy industrial thermal applications. This component is a critical accessory for operators utilizing the Esab W-17 torch handle, a platform known for its robustness in heavy-duty welding and heating environments. The 998819 is a multi-flame tip, meaning it features a cluster of flame orifices designed to produce a large, concentrated volume of heat (BTUs) rather than a single pinpoint flame used for welding. This configuration is essential for rapid thermal transfer into large workpieces.

Designed exclusively for Oxy-Acetylene gas mixtures, this heating head leverages the high flame temperature and secondary combustion characteristics of acetylene to provide efficient soaking heat. The tip construction typically involves high-conductivity copper alloys which withstand the intense reflected heat generated during operation. The 550-A designation indicates a specific flow rate and orifice size tailored for substantial heating tasks, distinguishing it from smaller brazing or welding tips. Proper gas pressure settings are required to maintain a neutral flame and prevent backfire or flashback, which are critical safety considerations when operating high-capacity multi-flame heads.

Integration with the W-17 torch handle is seamless, utilizing Esab's standard connection geometry to ensure a leak-proof seal. The head is designed to optimize gas mixing prior to combustion, ensuring a stable flame front across all orifices. This stability is paramount when working on vertical or overhead surfaces where flame consistency can be affected by gravity and draft. Industrial MRO professionals rely on the Esab 998819 for its predictability and the longevity associated with OEM manufacturing standards.

When specifying this part, it is crucial to verify the fuel gas source. This head is not compatible with alternate fuels like Propane or Propylene, as the injector and port geometry are specifically tuned for the combustion velocity of Acetylene. Using incorrect fuel gases can lead to flame instability, overheating of the tip, or insufficient heat output for the intended application.