Flow Verification Testing

After all of the piping has been installed in a building there is a simple test that may be done to ensure all the components of the system are working properly and the calculations and installations are correct. This test has been mandatory on all NFPA 13D systems installed in the City of Vancouver and the District of West Vancouver since February 1, 1992. The test is commonly referred to as the "put the water in the bucket" test and has proven its necessity over time.

The most remote one and most remote two sprinklers in one room are removed and a play pipe is installed with the same size of sprinkler nozzle used throughout the system. Large buckets are used to catch the water as it flows from the pipes for 30 seconds.

After all results are recorded it is determined whether or not the system provided a sufficient flow of water and pressure as required by the manufacturer’s specification for the sprinkler model and spacing used in the home. If the test is done in an area where the pressure fluctuates, a computer program is used to determine the flow at any reduction in available pressure. Testing is done by companies certified by the Standards Council of Canada as a testing laboratory or done by the installing contractor and witnessed by the local fire department.

Click here to download the Flow Verification bulletin from the City of Vancouver.

(Example of a Flow Verification Test)

(Example of a Flow Verification Test)