Cowles model W-25 dissolver. The mixer is equipped with an air over oil lift system with a 32" lift. Lift system has an air reservoir tank. The disperser has a 2" diameter by 48" long stainless steel shaft and a 20" diameter stainless steel 3 blade mixing propeller. Mixer uses a variable speed belt drive system. Driven by a 5 hp 1750 rpm motor. Requires 230/460 vac 3 phase electrical supply.