APV Crepaco R4HD Positive Displacement Pump. Model: R4HD. S/N: H-6379-94. Maximum capacity: 90 gpm. Displacement per 100 revolutions: 29 gpm. Maximum speed: 900 rpm. Maximum power requirement: 20 bhp. Heavy duty positive displacement pumps are typically used in pumping applications that require higher than 100 psig discharge pressures. They are designed for applications where long discharge lines and/or viscous products combine to create high head pressure. These pumps are equipped with external outboard bearings to prevent shaft deflections and minimize shaft, rotor, and seal wear. Inlets/outlets: (2) 2 in. dia. ACME fittings. Overall dimensions: 1 ft. 8 in. L x 11 in. W x 1 ft. 3-1/2 in. H.