This Italian made pump as an industrial design that has been field proven for many years, it is a common pump on hydro-excavating and pot-holing trailers. This pump is an upgraded version of the EZ2542S, and features a higher pressure rating and premium shaft bearing. Alternate Numbers EZ-3042S, N07-00104, 87235620, 4715. EZ Series 44 Pump: The General Pump EZ3042 is a triplex plunger pump equipped with solid ceramic plungers and an oil-bath crankcase made with die-cast anodized aluminum. The forged brass manifold features a 4:1 hydrostatic rating. Designed to handle a maximum pressure of 3000 PSI and a speed of 1750 RPM. Flex coupling and bell housing available for direct drive. The pump produces a maximum flow rate of 4.2 GPM. Stroke:.512 in./13 mm. HP: 8.6 EBHP. Maximum Inlet Pressure 125 PSI. Maximum Inlet Vacuum: 9 ft. water (7.9 in. Hg). Plunger Bore: 0.708 in./18 mm. Crankcase Oil Capacity 14.0 oz.. Inlet Port Thread 1/2-14 BSPP-F. Discharge Port. Thread 3/8-19 BSPP-F. Shaft Diameter .945 in. / 24 mm. Replaces the General Pump T991 50 Series