274373 - Miller 274373 Coolant Flow Sensor Switch

Genuine Miller 274373 Replacement Flow Switch

Keep your water-cooled welding operations running safely with the Miller 274373 Flow Switch. Designed specifically for Miller Electric cooling systems, this device is the first line of defense for your valuable water-cooled TIG torches and MIG guns. Water cooling allows for higher duty cycles and amperage, but it relies entirely on the circulation of coolant. This switch ensures that circulation is active before and during the weld.

The primary function of the 274373 is to act as a fail-safe. If your water cooler runs out of fluid, the pump fails, or a hose gets kinked, the flow switch triggers the welding power source to shut down or prevents the arc from initiating. Without this protection, a water-cooled power cable can burn out in seconds without coolant, leading to expensive repairs and hazardous conditions. This replacement switch restores that vital protection, giving operators peace of mind.

Designed for Durability

Industrial welding environments are tough, involving heat, dust, and vibration. Miller parts are built to withstand these conditions. The 274373 Flow Switch features robust construction suitable for the demands of a workshop or manufacturing floor. It is calibrated to detect the specific flow rates required by Miller equipment, avoiding nuisance tripping while ensuring rapid response to genuine flow loss.

Compatibility and Fitment

This part is a direct replacement for the flow switch found in many Miller Coolmate series water coolers and integrated cooling systems. Because it is a genuine Miller part, you don't need to worry about adapting fittings or splicing wires. It connects directly into the existing harness and plumbing of compatible units. Whether you are repairing an older unit or performing preventative maintenance, the Miller 274373 is the correct choice for maintaining the performance and longevity of your welding investment.