Fire resistance class: EI120(ve ho i↔o)S
Certificate of constancy of performance 1488-CPR-0422/W and 1396-CPR-0103.
Dampers certified for conformance with EN 15650.
Dampers are classified as per EN 13501-3 and tested according to EN 1366-2.
Declaration of performance 004-05-CPR-2015.
Optional EX making of dampers (as per ATEX directive) for applications in explosion hazard zones.
KDB ATEX 17.0616, EU Declaration of conformity 001-01-2017.
Cut-off dampers of fire resistance independent from direction of air flow and of installation side.
Dampers for rectangular and rounded ventilation ducts.
mcr FID S/S p/P, mcr FID S/S p/O cut-off dampers are designed for installation in general ventilation systems, at the point of penetration of these installations through building partitions.
During fire, they allow to maintain fire resistance of the building partition through which ventilation and air conditioning ducts run. They also prevent propagation of fire, smoke and fire gases to the safe part of the building.
When made for potentially explosive zones (EX variant), the dampers may operate in zone 1 (risk of explosion of gases inside and outside of ventilation ducts) and zone 21 (risk of explosion of dust outside ducts). The dampers conform to the requirements of group II category 2G and -/2D.
Dimensions for rectangular dampers:
Dimensions for rounded dampers:
Apart from standard dimensions, dampers can be customized to any size within the specified ranges.
The use of MP230/24 element enables the powering/triggering of KW1 mechanism with 230V AC voltage.
Detailed technical data are contained in the technical catalogue.
mcr FID S/S dampers can be used as pressure-relief dampers in gas extinguishing systems; in this case they are equipped with actuators without thermoelectric or thermal activators.