The heart of every FOGTEC system is special water mist nozzles. Due to a modular nozzle concept, nozzles are adapted for room protection applications, but are also available for raised floors, suspended ceilings and local applications. Their reliability has been intensively tested in the laboratories of VdS and FM.
Water is atomised in special nozzle inserts mounted to a nozzle body or in specially shaped nozzles, allowing to vary the spray pattern, flow rate and droplet distribution. The operating pressure of the nozzles range between 60 and 200 bar. For open nozzles in deluge systems the activation is triggered by a fire alarm system. In stand-by condition, the pipework is empty. Besides open nozzles, automatic nozzles are used that are activated like in a conventional sprinkler via a glass bulb. When activated via glass bulb nozzles, the pipework is already pressurised prior to triggering by water or compressed air (wet, pre-action or dry pipe system).