Description
For low pressure relief application, typically 5-75 pa. Used for room to room pressure control or a basic non-return valve.
Available with optional blade weights for increased pressure differentials.
Construction
From light gauge aluminium blades pivoted in nylon bearings set in 1.6mm thick aluminium frame either flanged for surface mounting or in channel frame for sleeve or duct mounting.
Blades are gasket tipped.
Size
From 150 x 150 to 700 x 1200 in 50mm increments, larger sizes are available when vertical front mullions are incorporated.Â
Weight approximately 12.5kg/m².