Applications The Reliable Model A Spray Nozzle dis charges water in small droplet sizes at low velocities. The resulting low penetration spray is effective for extinguishing fires in the lighter oils in cluding kerosene or for the control of the fire in ten sity of explosive hazards, thus allowing for their disposal by continu ous burning. The nozzles may also be used for cooling vola tile liquid or chemical receivers exposed to a fire area to control both the temperature and pressure in the receivers. Normally the spray nozzle forms a part of deluge type sprinkler system specifically engi neered as to nozzle type and piping to pro vide the re quired de gree of protection. Such systems are activated man ually or by means of a separate actuation system sensing ei ther the rate of temperature rise or the generation of products of combustion.