FIRE RETARDANT VALVE TYPE КОГ

Fire-retardant check valves with a fire resistance limit of at least 0.5 hours are intended for installation at the intersection of the enclosing structures by air ducts to prevent the flow of air and vapor-gas-air mixtures through the branches to the switched off fans (from the switched off fans) when the latter are connected to the collectors.

The valves consist of a body, a paddle and a counterbalance arm with a weight. When the air moves, the blade opens, and when the air flow stops, the blade closes the flow area of the valve. The estimated minimum air speed for the beginning of the opening of the web is 4.5 m / s. If necessary, it is possible to adjust the moment of opening and closing of the web by moving the load in one direction or another. The dampers are installed in the duct system using flanges. The valve is installed only in a horizontal position. The valves can be operated at temperatures of the working environment from -30 ° С to +45 ° С. The environment and air must not contain aggressive gases and vapors that destroy materials and paint coatings of the product. The valves are manufactured in climatic versions for operation in areas with moderate У(moderate) и УХЛ (boreal) climates and location categories 3 and 4 according to GOST 15150.