INITIAL JET 3-4

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.
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.

Peripheral pumps have higher head coefficients and steeper characteristic curves than side channel pumps. As the flow rate increases, peripheral pumps' input power decreases. Multistage pumps are peripheral pumps that have multiple blade wheels arranged at the different diameter levels of the impeller.