Series Blauberg BSK1...72S

Use

• The fire-resisting dampers are intended for automatic closing of process openings and air duct penetrations in intermediate floors, walls and partitions, as well as closing of openings in supply and exhaust ducts of smoke ventilation systems.
• The dampers of this particular design are not suitable for installation in air ducts and ducts of premises with rated explosion and fire safety category A and B and in flammable and explosive mixture intakes.
• The BSK1...72S fire-resisting duct dampers are capable of resisting fire for at least 60 minutes (EI 60) at the temperature of 600 °C.

Control and modifications

• The BSK1...72S series dampers are equipped with an mechanical actuating unit with a thermal fuse and a return spring.
• Emergency damper actuation: the flap remains in protective position (damper unaffected by fire) and is fixed by a thermal fuse (when the flap is installed in security position, a reverse spring is activated). Upon emergency actuation (damper directly affected by fire) the thermal fuse breaks down and the return spring moves the flap to operating position.

Design

• The BSK1...72S series dampers are made in the general-purpose industrial version with a minimized variety of hardware components using low-alloy galvanized steel. The damper flap is made of fire-resistant material.
• The duct installation design results in two mounting flanges on the casing for integration into a ventilation duct (air ducting) and external configuration of the drive mechanism for easier maintenance.
• The BSK1...72S series dampers are characterised by a simplified design and the absence of a hot and cold zone baffle.