The BB4 type, RGH is a multistage centrifugal pump with side suction, vertical delivery and horizontal pump with diffuser type casing. RGV is the vertical execution version of RGH pump type. Pump shaft is supported in anti-friction bearings. Enclosed impellers are of radial flow type provided with balancing holes. These pumps have standard lubrication of grease and are suitable for coupling with electric motors.