Circular air valve constructed throughout in steel and complete with fire damper.
Centre core section is adjustable by screw spindle and retaining nut for air volume control. The outer body is fitted with a gasket to form an air tight seal with the mounting ring.
The centre core is spring loaded and accommodates a fuseable link which upon breaking releases the core into a tight seal, forming a fire break.
The fuseable link operates at a temperature of 50°C and is also available in 74°C and 100°C format to special order.

Finish: White epoxy ovendried paint.

Fixing: Galvanised steel mounting ring with screw holes (baynet system).