The Pressure Relief Damper is used to maintain the inside pressure of a cleanroom. In cleanrooms and bio-cleanrooms, positive pressure is necessary to prevent the intrusion of contaminated air. On the other hand, if the internal pressure is too high, it will cause problems when the door is opened or closed.


The Vicfil VPRD Type Positive Pressure Damper (Pressure Relief Damper) allows for accurate control of the internal pressure in the cleanroom to provide constant positive pressure. The pressure can easily be adjusted by adjusting the position of the weight on the damper blade.