FD Series, Type C, Galvanised Steel Blades Out of Airstream, Angle Frame (AF) or HEVAC Frame (HF)

The FD-C series Circular Single Blade Externally Resettable Combination Fire and Volume Control Damper is designed to prevent the spread of fire and smoke through circular ducts that pass through fire-rated walls, floors, ceilings, and cavity barriers.

ES classified fire damper with reduced smoke leakage characteristics (BS EN 1366-2). Size range available: 100mm to 315mm dia.

The FD-C Series can be installed from one side of the fire separation barrier without the need for fire-rated infill material.

The FD Series curtain blade Fire dampers are suitable for use in dryline walls and masonry/concrete walls and floors and cavity barriers and is independently 3rd party tested and certified to the following standards:

• Fire resistance tested to BS EN 1366-2.
• E classified to BS EN13501-3.
• CE marked to BS EN 15650 The fully welded fire damper case meets the air tightness test requirements of HVCA.
• Fully welded damper casing leakage Class C to BS EN 1751. Normal operating conditions to a maximum of 1000Pa.
• Available in galvanised or stainless steel construction in rectangular, circular or flat oval spigot configurations.
• Tested horizontal and vertical options, with with four frame variations to suit varying applications.
• Available in sizes from 100mm wide x 100mm high up to 1200mm wide x 1000mm high in single section.
• Tested multi-sections on width and height available with angle frame fixing.
• For the protection of escape routes and areas with sleeping risk, the FSD-TD damper should be used. Please refer to Approved Document B(ADB).

  The FD-C Series circular single blade Fire dampers are suitable for use in dryline walls and masonry/concrete walls and floors and cavity barriers and is independently 3rd party tested and certified to the following standards:

  • Fire resistance tested to BS EN 1366-2.
  • ES classified to BS EN13501-3 CE marked to BS EN 15650 Closed blade leakage Class 3 to BS EN 1751.
  • Damper casing leakage Class C to BS EN 1751. Normal operating conditions – up to a maximum of 1000Pa.
  • The patented single blade layered design is held open against a torsion spring that is released via a fusible link having an alloy component that melts at 72°C allowing the spring mechanism to close the damper.
  • The externally resettable damper assembly and fusible link design enables testing without the need for specialist tools or access panels. NB: Access panels may be required to comply with DW145 G.3.1.5.
  • For the protection of escape routes and areas with sleeping risk, the FSD-C damper should be used. Please refer Approved Document B (ADB).