Gas Retention Dampers

Gas retention damper

Gas retention dampers are similar to standard Motorised Dampers but have additional seals to minimise leakage.

Gas retention Dampers are designed to contain fire extinguishing gases e.g. CO2 and FM200 within system. Gas retention Dampers when shut are 98% closed. We have supplied dampers for ATEX Zone 1 applications.

  • Tests They have been tested by BSRIA and have succeeded in being classed BSEN1751:1999 class 2.
  • Actuation Electrical, Pneumatic and Hydraulic all available.
  • Casing 2mm Galvanised mild Steel as standard. Stainless steel and Aluminium available.
  • Blades 0.7mm Double skin, ā€˜zā€™ type blades fitted with PVC coated Flame retardant polyether to maximise sealing.
  • Bushes Machined Bronze buses to ensure tightness of seal between casing and spindle.
  • Spindles S/S to maximise life expectancy.
  • Shims Fitted with St/St spring loaded side shims to minimise the gap between casing and blades.

Gas retention Dampers are designed to Failsafe close in case of fire.