Waukesha Positive Displacement Pump. Model 220. S/N: 191904-96. Ports: 4 in. S-line fittings. Flow rate for a new pump is 310 gpm at max rpm of 600. Discuss with salesperson your process and product to determine if this pump should handle your specific duty. Pump currently has O-ring seals. Pump seals can be changed and a drive added to suit your application. Overall dimensions: 2 ft. L x 1 ft. 2 in. W x 1 ft. 8 in. H.