Grundfos Variable Speed Horizontal Multistage Pressure Pump is a compact, reliable, horizontal, multistage, end-suction centrifugal pump with axial suction port and radial discharge port. Pump materials in contact with the liquid are in stainless steel. The mechanical shaft seal is a special designed, unbalanced O-Ring seal. Pipework connection is via internal Whitworth pipe threads, Rp (ISO7/1). The pump is fitted with a three phase, permanent-magnet, foot-mounted, fan-cooled asynchronous motor.