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Radial Flow Pumps

A radial flow pump is a centrifugal pump where the fluid being pumped is discharged radially, i.e. at right angles to the pump shaft. Radial flow pumps are CP’s standard and required in most applications.

A centrifugal pump is a rotodynamic pump that uses a rotating impeller to increase the pressure and flow rate of a fluid. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outwards into a diffuser or volute chamber, from where it exits into the downstream piping system. In contrast to axial flow pumps, in which the fluid exits the pump axially, the flow deflections in the impellers of radial flow pumps generate higher centrifugal forces. This results in higher heads but also lower flow rates in radial flow pumps.

Centrifugal pumps work by converting kinetic energy into potential energy measurable as static fluid pressure at the outlet of the pump. This action is described by Bernoulli's principle. With the mechanical action of an electric motor or similar, the rotation of the pump impeller imparts kinetic energy to the fluid through centrifugal force. The fluid is drawn from the inlet piping into the impeller intake eye and is accelerated outwards through the impeller vanes to the volute and outlet piping. As the fluid exits the impeller, if the outlet piping is too high to allow flow, the fluid kinetic energy is converted into static pressure. If the outlet piping is open at a lower level, the fluid will be released at greater speed.

CP’s radial flow pumps

CP’s radial flow magnetic drive and double mechanical seal centrifugal pumps are particularly recommended for medium capacities (Q to 600 m³/h) and high heads (H to 120 m). The choice of material and sealing method depend on the pumped fluid and operating conditions. High-alloy stainless steel, nickel or nickel-base alloys, titanium or titanium alloys and a variety of high-grade plastics or even ceramic lining can be used for the casing. Nowadays, many modern pumps have no shaft seal, with drive torque being transmitted merely by a permanent magnetic synchronous coupling (magnetic drive). If shaft seals are required, CP also offers a number of pumps with double mechanical seals.

CP’s radial flow pumps: MKP, MKP-Bio, MKP-S, MKPL, MKPL-S, MSKP, SZMK, MKTP, EB, ET, IL-BTO, ZMP, KTP

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