Living with Sprinklers Information Kit from HFSC

Water Flow Testing

Do A Water Flow Test About Once A Year

You can do this yourself (see below). Or your sprinkler contractor can do it for you.

To do a water flow test:

Find your water flow test control valve. It may be labeled main drain, inspector test or test and drain.
Slowly turn the control on (bring the valve in line with the pipe).
This will start water running. Let the water run for about 60 seconds. If your system has an alarm you will hear it.
Slowly turn the control off (the valve will make a corner to the pipe).
Write down the date you tested your water flow switch.
If your sprinklers are connected to a central alarm, inform the fire department that you are going to do a test.