DN40 - DN200 (model F-1 simple installation)
DN50 - DN150 (model E-1 angular construction)
DN40 (model E-3 angular construction)
Connections: flange according to ANSI B16.10 or EN1092-2;
threaded BSP and NPT;
ANSI / AWWA C606 compatible grooves
Maximum working pressure: 17.4 bar (250 psi)
Buildings: angular or straight version
Material: main valve - body, cover, ductile iron flap; EPDM sealing;
nest - brown; screws - steel and stainless steel; accessories - piping - steel and stainless steel (option), fittings - bronze and brass
Excitation (flood) stations are used in areas of high fire hazards or where the fire can quickly and rapidly develop. They are used for cooling industrial installations (conveyor belts, tanks, transformers, etc.) or for hydrant installation. Sprinklers and spray nozzles are used to distribute water or form water curtains. When supplying the internal hydrant installation, a pressure reduction valve (see card) is required to adjust the inlet pressure to the maximum operating pressure allowed for the hydrant. Flooding systems are activated (activated) automatically by sensors detecting smoke, high temperature, temperature rise, radiation, gas or by hand. Automatic detection can be carried out by electrical (most widespread) systems, pneumatic, hydraulic or it is possible to combine these systems. The main valve is always opened on a hydraulic basis (the ratio of the differential pressure of the priming chamber to the entrance chamber), therefore a positive ambient temperature should be ensured in the place where the valve is installed. In electrically excited systems, it should be determined whether the detection will be subject to one or more fire phenomena (eg only an increase in temperature or temperature and smoke). A stable and stable electrical supply must be taken into account. In special cases, an emergency power supply may be required. In electrically controlled systems, we determine the need for monitoring and the manner of its implementation, and we pay attention to the appropriate selection of detectors for a given type of hazards.
When designing excitation systems, the following must be taken into account: place of use, type of hazard, required approvals and approvals, size of the area protected by one section, type of water supply, drainage of the protected area, shutdown of industrial equipment in the zone of operation of the section at the moment of excitation, corrosively environmental and explosion hazard zones and flammable liquids lighter than water.
The available versions of the excitation stations as well as certificates and approvals should be consulted with the technical department.
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