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Overpressure valve KID (90)
General information
The KID (90) normally closed overpressure fire damper is designed to open open openings in the enclosing structures of airlocks and other rooms to maintain the required overpressure of 20 to 150 Pa in them, as well as to compensate the volume of removed combustion products from the rooms protected by exhaust smoke ventilation. Compensating supply of outside air by mechanical induced draft smoke ventilation can be provided using air supply systems in vestibule locks or lift shafts. In this case in the enclosures of vestibule-enclosures, to which directly adjacent to the protected premises can be installed overpressure dampers in fireproof design with the required fire resistance limits.
The use of dampers is regulated by the Code of Regulations SP 7.13130.2013 "Heating, Ventilation and Air Conditioning. Fire safety requirements". Valve KID (90) is normally closed with fire resistance EI90, which has a certificate of conformity. The pressure drop on the closed door of the vestibule from 20 Pa to 150 Pa, as well as the return of the damper to the closed position in case of pressure drop, is set on the damper directly during the tests of the smoke control system by means of spring adjustment. The valve size AhB (dimension A is parallel to the rotation axis, dimension B is perpendicular to the rotation axis) is the standard size and corresponds to the opening in the vestibule enclosure. The standard depth of the valve body is 165 mm. The size of the opening can be from 150x150 mm. The size of the aperture in the vestibule enclosure is determined by the designer depending on the capacity and pressure of smoke exhaust fans and the back pressure of the smoke exhaust system.
The KID (90) normally closed overpressure fire damper is designed to open open openings in the enclosing structures of airlocks and other rooms to maintain the required overpressure of 20 to 150 Pa in them, as well as to compensate the volume of removed combustion products from the rooms protected by exhaust smoke ventilation. Compensating supply of outside air by mechanical induced draft smoke ventilation can be provided using air supply systems in vestibule locks or lift shafts. In this case in the enclosures of vestibule-enclosures, to which directly adjacent to the protected premises can be installed overpressure dampers in fireproof design with the required fire resistance limits.
The use of dampers is regulated by the Code of Regulations SP 7.13130.2013 "Heating, Ventilation and Air Conditioning. Fire safety requirements". Valve KID (90) is normally closed with fire resistance EI90, which has a certificate of conformity. The pressure drop on the closed door of the vestibule from 20 Pa to 150 Pa, as well as the return of the damper to the closed position in case of pressure drop, is set on the damper directly during the tests of the smoke control system by means of spring adjustment. The valve size AhB (dimension A is parallel to the rotation axis, dimension B is perpendicular to the rotation axis) is the standard size and corresponds to the opening in the vestibule enclosure. The standard depth of the valve body is 165 mm. The size of the opening can be from 150x150 mm. The size of the aperture in the vestibule enclosure is determined by the designer depending on the capacity and pressure of smoke exhaust fans and the back pressure of the smoke exhaust system.
