What is the standard interval for repeating full-flow testing when a bypass flow meter is connected to the pump suction?

What is the standard interval for repeating full-flow testing when a bypass flow meter is connected to the pump suction?

• A. Annually
• B. Every 2 years
• C. Every 3 years
• D. Every 5 years

Answer: (C)

Having a bypass flow meter on the pump suction changes how you verify the pump’s capacity. The bypass provides a direct, calibrated measure of the pump’s output during a full-flow test without relying solely on the rest of the system to absorb or route the flow. With that reliable measurement available, the testing standard allows the full-flow test to be repeated less frequently, specifically every three years. This setup gives you confidence that the pump can deliver its rated flow over time while avoiding unnecessary annual full-flow testing.

Having a bypass flow meter on the pump suction changes how you verify the pump’s capacity. The bypass provides a direct, calibrated measure of the pump’s output during a full-flow test without relying solely on the rest of the system to absorb or route the flow. With that reliable measurement available, the testing standard allows the full-flow test to be repeated less frequently, specifically every three years. This setup gives you confidence that the pump can deliver its rated flow over time while avoiding unnecessary annual full-flow testing.