35664 - ESAB PT-15XL 340A Oxygen Plasma Nozzle Replacement

Technical Overview of the ESAB 35664 Nozzle

The ESAB 35664 is a high-performance plasma cutting nozzle engineered specifically for the PT-15XL mechanized torch platform. This component is critical for shaping and constricting the plasma arc, enabling the high energy density required for severing thick metal plates. Rated for a substantial 340 Amperes, this nozzle is designed to operate exclusively with Oxygen (O2) as the plasma gas. The use of oxygen in this high-amperage configuration creates an exothermic reaction with carbon steel, significantly increasing cutting speed and improving the quality of the cut face compared to inert gases.

Constructed from premium-grade copper alloys, the 35664 nozzle is built to withstand the intense thermal loads generated during 340A operations. The internal geometry of the orifice is precision-machined to ensure a concentric gas flow, which is vital for maintaining a straight cut edge and minimizing angular deviation. In the PT-15XL system, the nozzle works in conjunction with the electrode and swirl ring to vortex the gas, creating a stable plasma column. Because this nozzle operates at such high power levels, it relies heavily on the torch's water-cooling capabilities to prevent melting. Proper coolant flow and maintenance of the cooling system are essential when running this consumable.

Technicians should regularly inspect the nozzle orifice for signs of wear, such as ovalization or nicks, which can degrade cut quality and lead to arc wandering. The 35664 is an OEM part, ensuring that tolerances match the original equipment specifications for the PT-15XL. Using genuine ESAB parts helps maintain the dielectric distances required to prevent internal arcing and ensures the safety and longevity of the torch head assembly. This specific nozzle is not interchangeable with lower amperage variants or nozzles designed for nitrogen/argon blends, as the orifice sizing is strictly calculated for the flow rates and expansion characteristics of 340A oxygen plasma.