Zone Check Valves are mandatorily used in the sprinkler system. In case of fire, it senses the water flow within the piping and converts it to the electrical signal to give warning and supplies water to piping and sprinkler. Each level or fire zone shall be provided with a zone control valve assembly consists of
- Supervised isolation valve (Butterfly valve)
- Pressure gauge
- Water flow switch
- Inspectors test valve and sectional drain valve.