Lincoln Electric KP21T-37 Mig Welder Nozzle Water Cooled

Product Description

The LINCOLN ELECTRIC KP21T-37 is a fixed recessed water-cooled MIG welding nozzle designed for use with Lincoln Electric MIG welding equipment. It directs shielding gas flow around the weld pool to protect the arc from atmospheric contamination. The fixed recessed geometry positions the contact tip setback from the nozzle face, reducing spatter buildup and improving access in tight joint configurations. Rated for use at 100 to 175 amps, this nozzle suits light to medium-duty MIG welding applications. It is installed and serviced by welding technicians and maintenance professionals working with Lincoln water-cooled MIG gun systems.

This nozzle is suited for water-cooled MIG gun setups in shop fabrication, light manufacturing, and maintenance welding environments. The water-cooled design allows the gun and nozzle assembly to handle sustained duty cycles without the heat buildup associated with air-cooled torches. The fixed recessed configuration is a common choice for flat and horizontal welds where tip protection and consistent gas coverage are priorities. It ships as a single unit, making it practical for one-for-one replacement during scheduled maintenance or unplanned downtime.

Key Features

• Fixed recessed nozzle geometry reduces spatter accumulation on the contact tip
• Water-cooled construction supports sustained duty cycles in production welding
• 0.375 inch bore diameter provides consistent shielding gas distribution
• Rated for 100 to 175 amp operation
• Direct OEM-style fit for compatible Lincoln Electric MIG gun platforms
• Single-unit packaging allows straightforward one-for-one field replacement

Compatibility

Designed for use with Lincoln Electric MIG welding equipment. Confirm gun model and nozzle thread type against your existing assembly before ordering.

Installation Notes

Water-cooled MIG nozzle replacement should be performed by a qualified welding technician with the welder powered down and the water-cooling circuit depressurized before disassembly. Inspect the water-cooling passages and gas diffuser for blockage or damage during the nozzle change. Hand-tighten the nozzle to the recommended snug fit without over-torquing, which can damage the gun body threads. Follow the equipment manufacturer's service procedures and applicable workplace safety standards.