5 X 6 INCH ROPER PROGRESSIVE CAVITY PUMP Stock Number: P-2145 Mfg. Roper Possibly model 71219 (plate is missing) 10 Hp, 1750 rpm, 230/460v, 3ph Carbon Steel Shell, Stainless Steel shaft 6 inch inlet x 5 inch out reduced to 3 x 3 inch (1) available Posted in Pump, Displacement and Gear.