Galvanized Frame Circular Volume Control Damper

Circular Volume Control Damper is made with high quality Galvanized Frame and Single Flap Blade fixed with nylon bushes, with hand locking quadrant or optional motorized actuator. Designed for use in heating, ventilating and air conditioning systems. Joints are welded and protected by aluminium spray coating to prevent rusting. GI blades are made of circular single flap welded to the axle for strength. Hand locking quadrant is provided with clear open/ close indication and three intermediate open positions (1/4 – 1/2 – 3/4). Optional Foam gasket is sealed across the edges to minimize air leakage around the blade. Flange width 25mm as standard. Dampers without flanges available as option for duct insertion purpose. Bushings: Self-lubricating nylon bushings Motorised damper or required make can be provided as option.