Ballast pump type MBDPC 150/200/300/400/500 The MarFlex deepwell pump is a single stage centrifugal deepwell pump and uses the oil lubricated drive shaft principle. It can be driven by either an electric motor or a hydraulic motor. However, the electric drive pump system has a higher system efficiency compared to a hydraulic drive pump system. It also has a low noise level, is easy to install, and needs less maintenance because of the electrical wiring instead of the hydraulic piping system. As a result 99% of all deepwell pumps, installed by MarFlex, are electrically driven. Pumps are made of Material description AISI 316L/Stainless Steel (standard) Duplex/22Cr Duplex (optional) Super Duplex/25Cr Duplex (optional) Sea water resistance Material Liquid Temperature Duty Precautions operation : 316L : sea water : 0-30°C : continuous : flush with fresh water after pump Pump Performance Curve Pumping Excellence