How many water mist system pumps are there?

How many water mist system pumps are there?

• A. There are 2 electric motor pumps.
• B. There are 4 electric motor pumps rated at 230 GPM at 1245 psi.
• C. There are 6 electric motor pumps.
• D. There are 8 electric motor pumps.

Answer: (B)

A water mist system must deliver a specific total water flow at a high and stable pressure to all nozzles. The number of pumps and their individual capacity determine whether that requirement is met across the entire network. In this setup, there are four electric motor pumps, each delivering 230 gallons per minute at 1245 psi. Four pumps give a total potential flow of 920 GPM at 1245 psi when all are running, which provides enough mist output and pressure for the system’s zones. It also provides redundancy—if one pump is down, the others still supply substantial capacity. Fewer pumps would fall short on required flow and pressure, while more pumps would be unnecessary extra complexity and cost.

A water mist system must deliver a specific total water flow at a high and stable pressure to all nozzles. The number of pumps and their individual capacity determine whether that requirement is met across the entire network. In this setup, there are four electric motor pumps, each delivering 230 gallons per minute at 1245 psi. Four pumps give a total potential flow of 920 GPM at 1245 psi when all are running, which provides enough mist output and pressure for the system’s zones. It also provides redundancy—if one pump is down, the others still supply substantial capacity. Fewer pumps would fall short on required flow and pressure, while more pumps would be unnecessary extra complexity and cost.