WILO INITIAL PERIPHERAL

Peripheral pumps, 
also referred to as regenerative pumps
 (also see Side channel pumps),
 are centrifugal pumps whose impeller
 (see Peripheral impeller)
 rotates in a largely concentric casing 
channel with an inlet and an outlet opening.

Peripheral pumps operate
 by means of an impeller
 characterised by a large 
number of small dual-flow
 radial blades (with dual input) arranged
 along its peripheral area. 
The centrifugal forces inside the
 rotor generate a circulatory flow 
between the impeller and the casing channel.

A pump is a device that moves
 fluids (liquids or gases),
 or sometimes slurries,
 by mechanical action, 
typically converted from
 electrical energy into hydraulic energy.

On the other hand, 
they have a better capacity.
 Another very striking advantage
 lies in the fact that these products 
are very inexpensive to purchase. 
For these reasons,
 they are widely used in the
 home to pump clean water
, without abrasive particles or chemical liquids.