Supply Air Valve
Material: Steel sheet
Thickness: 1.0mm
Made of Steel
Removable Core 
With Collars 
Size: 80, 100, 125,150, 160, 200, 250
Powder Coated, Standard Colour RAL 9010/9016, other Colours Available

Features:
Fully adjustable core.
Excellent pressure drop and noise characteristics.
Quick, easy valve removal.
Inclusive mounting rings.
Steel construction with durable white stoved finish.
Fire rated valve option.
The KD is manufactured from steel sheet painted white to make it possible to provide longer service life. 
Valve adjustment is achieved by simply rotating the central core inwards or outwards on its spindle and locking into its set position using the holding nut at the rear of the valve assembly. 
Cleaning is easily done without affecting valve settings.