What is the correct way to connect pumps in series to ensure same flow?

Connecting pumps in series to ensure the same flow rate requires that they operate at the same gallons per minute (GPM). When pumps are connected in series, the goal is to increase the total head (pressure) while maintaining a consistent flow rate throughout the system. By ensuring that each pump is designed to handle the same flow (same GPM), the system can effectively transfer the liquid without creating flow inconsistencies or adverse effects on pump performance.

When pumps share the same flow rate, they can effectively support each other in moving the fluid through the system, allowing the first pump to push fluid into the second without introducing different flow dynamics that could lead to operational problems or inefficiencies. This synchronization is critical because differing flow rates can cause issues such as cavitation or overloading, adversely affecting pump life and overall system performance.

Therefore, maintaining the same flow rate is vital for achieving optimal operation when pumps are arranged in series.