1.5 INCH WAUKESHA STAINLESS STEEL DISPLACEMENT PUMP Stock Number: P-1983 Mfg. Waukesha Model 250, stainless steel with 2 lobe resilient rotors 1.5 inch in and out with 2 inch tri-clamp adapters 1.5 Hp varidrive, 33 to 300 rpm output 230/460v, 3ph (1) available Posted in Pump, Displacement and Gear.