Waukesha positive displacement lobe type pump, model 220, serial # 5105 ss. Features 316 stainless steel construction, food grade design with rotary lobes, pump is rated for maximum gpm of 300 at 600 rpm, pump produces . 52 gpm per revolution for maximum output of 98. 8 gpm as configured, directly driven by reeves 20 horsepower variable speed drive with 28. 5 to 190 rpm speed range though existing varidrive 14 to 1 gear reducer, 4" inlet and outlet with acme threaded bevel seat connections, flushed mechanical seals, 1/2" through cover cip connectioin, operating on 220/440/3 phase voltage, mounted on common aluminum base with casters and push handle. Formerly used in pharmaceutical service. See video of this unit under power on our youtube channel at https://youtu. Be/zbvndjgdcge