2. Different pumping conditions

Two main pumping conditions are often demanded:

1. Constant pressure/flow.

2. Variable flow.
   

Let’s look at each of these in turn.

3. Constant pressure/ flow system

There are situations in which we need to maintain a constant pressure and flow. For example, a hotel’s water system, a farm’s irrigation system and a factory’s water system. As more outlets are opened, the same flow at each outlet is still required.

Constant flow pumping: