Brochure

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1. Introduction to Centrifugal Pumps

1.3 Pump types and systems

This section describes a selection of the centrifugal pumps produced by

Grundfos. The pumps are divided in ﬁve overall groups: Circulation pumps,

pumps for pressure boosting and ﬂuid transport, water supply pumps, in-

dustrial pumps and wastewater pumps. Many of the pump types can be

used in dierent applications.

Circulation pumps are primarily used for circulation of water in closed sys-

tems e.g. heating, cooling and airconditioning systems as well as domestic

hot water systems. The water in a domestic hot water system constantly

circulates in the pipes. This prevents a long wait for hot water when the tap

is opened.

Pumps for pressure boosting are used for increasing the pressure of cold wa-

ter and as condensate pumps for steam boilers. The pumps are usually de-

signed to handle ﬂuids with small particles such as sand.

Water supply pumps can be installed in two ways: They can either be sub-

merged in a well or they can be placed on the ground surface. The conditions

in the water supply system make heavy demands on robustness towards

ochre, lime and sand.

Industrial pumps can, as the name indicates, be used everywhere in the in-

dustry and this in a very broad section of systems which handle many dif-

ferent homogeneous and inhomogeneous ﬂuids. Strict environmental and

safety requirements are enforced on pumps which must handle corrosive,

toxic or explosive ﬂuids, e.g. that the pump is hermetically closed and cor-

rosion resistant.

Wastewater pumps are used for pumping contaminated water in sewage

plants and industrial systems. The pumps are constructed making it possible

to pump ﬂuids with a high content of solid particles.