What types of water pump are there?

There are, very generally, two main types of water pump.

• Centrifugal – which uses a rotating impeller- like a fan - to pull water into the pump and then pressurize the outward flow.

• Positive Displacement or Diaphragm – which often uses a flexible diaphragm which is mechanically contracted and expanded to change pressure and create a fixed flow. 

 

However, pumps intended for domestic use tend to come in the categories Clean Water Pumps and Dirty Water Pumps