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Lightweight Welding Nozzle

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  • 7 Sizes Available
  • Oxy Acetylene
  • For Lightweight Shanks
Clear selection



A lightweight swaged welding nozzle for use with a lightweight shank and mixer in oxy acetylene welding. Choose from the above dropdown menu to choose a size of nozzle to suit your welding application.


Key Features
  • One piece construction welding nozzle for lightweight shanks
Nozzle Size Plate Thickness
No. 1 0.9mm
No. 2 1.2mm
No. 3 2.0mm
No. 5 2.6mm
No. 7 3.2mm
No. 10 4.0mm
No. 13 5.0mm




A lightweight shank with a welding mixer can accommodate a welding nozzle.  The copper swan neck nozzle is sized to allow a flame intensity that should be matched to the material thickness being welded.  The relationship between material thickness, blowpipe nozzle size and welding speed can be seen in the table below.



Commonly referred to as gas welding, is a process which typically relies on combustion of a mix of oxygen and acetylene.  The mix of oxygen and acetylene in different ratios controls controls the characteristic of the flame from the nozzle.  In correct proportions a mixture of oxygen and acetylene can produce temperatures of approximately 3200 °C.  The operator of a lightweight shank can achieve a neutral, oxidising or carburising flame, each with its own advantage for certain applications.

The intense heat from the oxy acetylene flame causes a molten puddle to form on the material being welded.  Often, a filler material is added to form a join.


Other Information:
  • Hoses being used with the torch should be the correct type for the gas and fitted with check valves (non-return).  They are colour coded according to the gas they are designed for – red for acetylene and blue for oxygen.
  • Flashback arrestors should be installed on the regulator side of the hose.
  • A nozzle should be inspected regularly to check for damage or obstructions.
  • A poorly maintained nozzle can cause turbulent gas flow and increases the risk of flashback.
  • Obstructions to the nozzle can be caused by dirt or spatter.
  • Do not hold the nozzle too close to the workpiece. The nozzle can overheat and cause a flashback.



Lightweight welding nozzle


Additional information


No. 1 (0.9mm), No. 2 (1.2mm), No. 3 (2.0mm), No. 5 (2.6mm), No. 7 (3.2mm), No. 10 (4.0mm), No. 13 (5.0mm)