Spray system for fire and dust hazard protection in enclosed work areas has controlled mixture of water and air supplied to nozzle of self-contained mobile unit

摘要

A compressor (4) delivers air to a reservoir tank (14) having a pressure switch (21) and feeding two pressure reducers (8,8') feeding, respectively, the nozzle (2) and water tank (7) through throttle valves (13,13') and shut off valves (17,17') controlled by a unit (5).