Advanced Multistage Performance with Simplified Maintenance Access
MSN
API Category: BB3
MSN pumps multi-stage, axially split casing, double casing volute, opposed impeller arrangement (for axial hydraulic balance, eliminating high thrust loads on the bearings), single or double entry first-stage impeller. They are used extensively in high-pressure applications such as refinery process pumps, transfer pumps, water injection pumps, pipeline pumps, BFW pumps, offshore MOL pumps. The axially split design also allows the rotor to be replaced with a spare assembly without removing the pump from the piping. The rotating element can also be balanced as a complete assembly prior to installation.
