Durco Mark II Centrifugal Pump. S/N: 377310. Size: 2K3x1.5-10A/92 RV. Capacity: 140 gpm @ 40 tdh. Alloy: DCI (ductile cast iron-ASTMA395). Reliance XEX Electric Motor, 7.5 hp, 1760 rpm, 230/460 V, 18.0/9.0 amps, 60 Hz, 3 phase. The Durco Mark II reverse vane impeller provised one of the lowest NPSH requirements. In operation, the rear cover, not the casing, is the war surface. This reduces maintenance time and replacement costs. Inlets: (1) 3 in. dia. flanged suction port. Outlets: (1) 1-1/2 in. dia. flanged discharge port. Overall dimensions: 52 in. L x 18 in. W x 21 in. H.