0558009325 - ESAB 2.5mm Water Injection Plasma Nozzle (Pack of 5)

Technical Specifications: ESAB 0558009325 Nozzle

The ESAB 0558009325 is a high-performance replacement nozzle designed for ESAB's water injection plasma torches (commonly associated with series like the PT-15, PT-600, or similar high-capacity mechanized systems). This nozzle features a 2.5mm (0.099 inch) orifice, specifically calibrated for high-current cutting applications where arc density and focus are paramount.

Water injection plasma cutting differs from standard gas-shielded plasma by using a radial flow of water to impinge upon the arc. This constriction increases the arc temperature to roughly 30,000°C or more, significantly higher than conventional plasma. The 0558009325 nozzle is the critical component that shapes this constricted arc. Its internal geometry is machined to facilitate the smooth transition of the plasma gas while managing the surrounding water vortex. This results in a "dross-free" cut on many materials and a significantly reduced heat-affected zone (HAZ).

Maintenance and Performance

For optimal performance, it is crucial to match the nozzle orifice size to the amperage setting of your power source. A 2.5mm nozzle is typically rated for higher amperage ranges (consult your specific torch manual for the exact current/gas curve). Running a nozzle at an amperage far below or above its rating can lead to arc instability or rapid orifice erosion. Signs of wear include an out-of-round orifice or internal gouging, which will immediately degrade cut angularity.

This package contains five (5) nozzles. Regular inspection of the nozzle face and bore is recommended during every shift change or electrode replacement. Ensure that the O-rings and seating surfaces on the torch head are clean before installation to prevent coolant leaks that could disrupt the arc or damage the torch body. These nozzles are compatible with standard water injection setups requiring the .099" specification.