These valves is used in order to perform the testing and maintenance of the sprinkler systems. With different sizes orifices creates streaming only for just one sprinkler flow of the stream and creating a sprinkler water flow alarm in case of line control devices are provided for testing purposes. And also changing the drain valve on the pipe used for draining the water.
Test and Drain Valve are threaded 1 ", 1 1/4", 2 "Sizes are available. UL - FM approved.