V-750

Pressure relief damper

The aluminium pressure relief damper can be used for positive (V-750) or negative (N-750) pressures. Mounting possible in the wall (-F750) or in between rectangular ducts (-U750). They are used as non-return dampers in airhandling systems to prevent air from flowing against the intended airflow direction. When the airhandling system is turned off, the blades close due to their own weight.
The blades have an acoustic joint and are running in nylon bushings. In order to prevent the blades from rotating, a blade stop has been provided. Distance of the blades is 75mm.