Opposed Blades Louver Dampers

are the most effective type of damper for controlling the flow of gases with the least disturbance to flow in ducts. Each pair of blades is carefully fitted to ensure precise operation in opposing directions, and thus creating highly controllable passages for the gas.

The frame is made from a formed or fabricated channel and is designed to withstand any system upset conditions. The blades are designed to adequately handle all loads, up to and including upset conditions with a maximum center span deflection determined by the engineering department so as to ensure smooth and trouble free operation. The drive shafts are supported in maintenance-free bearings. An adjustable floating packing gland seals the shaft passage through the damper frame. A special non-binding, fully adjustable external linkage is used to operate the damper. A wide variety of operators can be specified -electric, pneumatic, hydraulic or manual.