What is the effect of running two pumps in parallel versus running a single pump?

Going back to our pump curves, the combined curve for parallel pumps is created from the addition of the flow capacities of each pump. Two of the same pumps will result in double the flow while two different pumps will result in the addition of the flows.

Do pumps in parallel increase pressure?

Since almost all installations of parallel pumps are with identical pumps, each pump will pump exactly one half of the total flow rate. Each pump will produce the same pressure head. Each pump will operate at the same point on its pump curve.

Can you run 2 pool pumps together?

As you know, parallel pumping involves installing two circulating pumps in a piping system in parallel with each other. When selected properly, each circulator will pump half of the total required flow rate at the design head loss.

What happens when you put two pumps in series?

The term Pumping in Series means that 1 pump acts as a booster to feed another pump. So, each of these 2 Pumps in Series is lower cost, lower power, and potentially more reliable as a system than a single larger pump that produces the same heads as the total of the two smaller Series pumps.

Why two similar pumps are arranged in series or in parallel in a pipe flow system?

Often, a good system design is to have pumps in parallel because they can provide flexibility to match the flow to the load. This setup is also more reliable because it provides standby protection for a relatively high percentage of the full load in the event of one pump loss.

What is the advantage of connecting pumps in parallel instead of using one large pump?

One major benefit of parallel pumping is the high degree of standby capacity provided by single pump operation. When one pump is out of operation, the other pump continues to pump water through the system. But the flow rate isn’t cut in half just because only one pump is operating.