134608 - Miller 100 GPH Clockwise Coolant Pump with Clamp

Reliable Cooling for High-Performance Welding

The Miller 134608 Coolant Pump is an essential replacement component designed to restore the efficiency and reliability of your Miller water-cooling system. In high-amperage TIG and MIG welding applications, thermal management is critical. A failing pump can lead to reduced coolant flow, causing torches to overheat, consumables to degrade rapidly, and potentially catastrophic failure of the power cable or torch head. This specific unit is engineered to deliver a flow rate of 100 Gallons Per Hour (GPH), a standard specification for many industrial welding coolers that ensures rapid heat dissipation from the torch head back to the heat exchanger.

Mechanically, this pump is distinguished by its Clockwise (CW) rotation. It is imperative to match the rotation of the pump to the drive motor of your cooling unit; installing a pump with incorrect rotation will result in zero flow and immediate overheating risks. The Miller 134608 is built to precise OEM specifications, ensuring that the internal vanes and drive mechanism align perfectly with your machine's existing hardware. The unit comes complete with a mounting clamp, which is vital for securing the pump body to the motor or chassis, preventing the pump itself from spinning due to torque and ensuring a stable connection to the fluid lines.

Using genuine Miller replacement parts like the 134608 guarantees compatibility and longevity. Aftermarket pumps may not meet the specific pressure relief and flow curve requirements of Miller cooling systems, potentially leading to leaks or inadequate cooling at the torch tip. This pump is designed to handle standard welding coolants, including mixtures of water and ethylene glycol or propylene glycol, resisting corrosion and wear over prolonged operational periods. Whether you are performing maintenance on a Coolmate system or repairing an integrated cooling unit, this 100 GPH pump provides the hydraulic muscle needed to keep your equipment running within its thermal duty cycle.

Installation is straightforward for technicians familiar with welding cooler maintenance. The inclusion of the clamp simplifies the process, removing the need to salvage old, potentially fatigued hardware. By maintaining a steady 100 GPH flow, this pump helps ensure that your welding parameters remain stable, as consistent cooling prevents the electrical resistance changes that occur when power cables overheat.