Rectangular air damper JVK series

Flanged casing on both sides. made of galvanised steel. designed to fit Into rectangular fans. The blades are hollow and thek shafts tun embedded in polymer guides. The external control lever adjusts all blades equally. The control mechanism is also outside the airstream and seared against operational interruptions therefore unaffected by airborne contamiration. The blades create an additional pressure drop (shown h the dia-gram alongside) %Nob must be considered when designing.