Non-Return Damper - Ancillaries

Products

Ancillaries

Non-Return Damper

	Application	Construction
ABD.. Butterfly Shutters for Axial Roof Units	Butterfly shutters are designed for use with our axial roof units. They are an optional extra on down-flow or horizontal discharge units but a standard fitting on vertical discharge units.	They can be supplied in plastic, steel or aluminium.
CBD.. Backdraft Shutters for Centrifugal Roof Units	Back draft shutters are designed for use with our centrifugal roof units and some smaller axial roof units. They fit inside the base of the unit. They are standard supply with twin fan units and an optional extra for single fan units.	The frame is of steel and the flaps are of extruded plastic.
MCA.. Backdraft dampers for Mixvent Fans	The MCA back-draft dampers are specifically designed to suit the VentMajor and Mixvent range of fans.	These are of powder coated steel.
RSK.. Backdraft Shutters for In-line Fans	The RSK dampers are designed to match a wide range of fans. The flaps in the unit are spring loaded ensuring a positive seal when the fan is switched off.	The tube is of galvanised steel and the flaps of aluminium.
Smooth Flow Backdraft Damper	Suits most in-line fans; provides protection against backdraft with limited effect on performance.	Robust low profile engineering plastic housing.
Butterfly Dampers to suit RDE/RVE