Unused 835 gpm 316 SS Horizontal Centrifugal Pump. Mfg. by Durco (Flowserve). Model Mark III. 53' head. Size 2K6x4-10HRV-8.06. Type MK3 STD. MDP 250 psi @ 100°F. Casing : DCI. Impeller: 316SS. 20 HP motor. Serial #1400944CHP015C. Designed as Rundown Cooler Cooling Water Pump.