Immersion Variant of High-pressure Pump

21.03.2012

At this year’s Achema, KSB Aktiengesellschaft will for the first time present immersion pumps type Movitec VCl. These vertical, multistage centrifugal pumps are used for handling coolants, condensate and lubricants for machine tools.

Immersion Variant of High-pressure Pump

The new Movitec VCI pumps can be supplied in five sizes with a varying number of stages. (KSB Aktiengesellschaft, Frankenthal, Germany)

Potential fields of application include industrial recirculation systems, cooling water circuits, washing plants and pressure boosting in general process applications.

In order to efficiently cover the largest possible range of flow rates and heads, the new Movitec VCI will be available in five sizes and with different numbers of stages. The maximum flow rate is 27 cubic metres per hour and the maximum discharge head is 250 metres. The permissible fluid temperature ranges between -20 and +120 C. The pump sets are intended for installation on tanks, with the pump’s hydraulic section being immersed in the fluid pumped, while the motor is dry-installed. The maximum immersion depth is 732 mm. The design combines the benefits of submersible pumps with those of dry-installed pump/motor sets. It constitutes a particularly compact solution. As the largest part of the pumps is inside the tank, fewer pipes and valves are needed. This reduces costs and helps optimise suction conditions.

The pump can be fitted with blind stages to ensure that the pump s inlet section is close to the bottom of the tank and that the fluids pumped are recirculated well. Hydraulically optimised stainless steel stage casings and impellers make for excellent efficiencies. This in turn keeps down energy consumption und operating costs. Furthermore, there is very little heat dissipation into the fluid pumped. Because of its compact, easy-to-replace cartridge-type mechanical seal and the automatic return of small amounts of leakage into the tank, the new Movitec VCI is very easy to maintain and has a long service life. As a standard the pump sets are equipped with a standardised IE2 motor. On request, they can be supplied with an IE3 motor. It is also possible to operate the pump sets using a frequency inverter. This increases system efficiency and allows the flow rate to be matched to actual demand.

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