The PowerCool W350 120V water cooler from Everlast is designed to work with 120V input to suit the requirements of Miller, Lincoln, Thermal Arc, ESAB and other similar TIG welders to provide the maximum cooling capacity up to 350 Amps of power.The unit features left hand 5/8"-18 LH fittings for standard type connection of TIG water lines. An alarm indicates lack of flow or water level issues to help protect the torch and prevent disasterous (and expensive) torch meltdowns when armed. The radiator is made from copper for maximum cooling capability. The Italian made pump is made from stainless steel with a bronze impeller for maximum wearability. The Italian industrial motor is sealed for best protection from the elements. A generous reservoir holds just a little over 2.2 gallons of coolant for maximum circulation capacity. Use only distilled water or antifreeze specifically designed for use with TIG/MIG torch coolers. Do not use automotive anti freeze! Use approved TIG coolant only. Notice: Everlast is aware that customers may be using various types of coolant in their PowerCool Water Coolers and with our NOVA or other brand TIG torches. These range from distilled water to Isopropyl alcohol to automotive type anti-freeze to R.V. anti-freeze to “private concoctions.” Since the PowerCool product line was released over 12 years ago we’ve gathered valuable data and gained experience concerning the use of coolants and their impact on both the lifespan of the cooler and the TIG torches themselves. With that said, there are several areas of concern that we look for in a coolant. We have found that most popular alternatives fail to provide satisfactory performance. We have taken our findings and concerns and listed them below as basic elementary requirements needed for best performance and product life.