Low Leakage Circular Dampers are manufactured with multi-louver design either in parallel louver or in variable inlets vane design. These Circular Dampers with vertical movement of disc/ flap are manufactured as gates or guillotine damper. These Circular Dampers are required for various industrial applications. Low Leakage Circular Dampers are supplied with manual or pneumatic or motorised actuation to achieve either on-off or proportional control having input control system from DCS, PLC or PID.