A sprinkler system employing automatic sprinklers that are attached to a piping system that contains air that might or might not be under pressure, with a supplemental detection system installed in the same areas as sprinklers.
1. Check Valve
2. Control Valve
3. Preaction Valve
4. Check Valve
5. Water Supply
6. Water Motor Gong
7. Sprinkler (closed)
8. Detector
9. Siren
10.Manual Release Station
11.Control Panel
12.Test & Drain Valve
