What is a common method used for testing a fire sprinkler system's flow rate?

A common method for testing a fire sprinkler system's flow rate involves using a bucket test or flow meter. The bucket test provides a simple yet effective way to measure the actual flow rate by timing how long it takes to fill a container of known volume. This allows for the calculation of flow rate in gallons per minute (GPM), which is crucial for determining if the sprinkler system will operate effectively in the event of a fire.

Using a flow meter can provide more precise measurements of water flow through the system. Flow meters are designed to measure the volumetric flow of water, giving accurate and immediate feedback that can be vital for ensuring the system meets code requirements.

While visual inspections and pressure testing with gauges are important for assessing the overall condition and integrity of the system, they do not specifically measure flow rate. Listening for alarms is also not a reliable method for evaluating flow rate, as alarms may trigger based on system pressure or other factors, rather than direct flow measurement.