... system. Suitable for Tig,Mig,Plasma welding Product functionOld typeOtherNew typecharacteristicPumpIron pumpPlastic pump Big power 370W stainless steel pumpHigh flow, ... high lift, no rust, no blockCondensationSteel Pipe radiatorAluminum pipe radiator3-rows steel pipe, a ... wall.We also have a big capacity water cooler for welding machine model, such as MD-1121, ...