Dampers & Silencers Dampers     Air Development Corp. offers a full line of rugged, reliable dampers to provide critical, man-safe isolation and/or control of airflow in utility, refinery and industrial process applications. Designed to permit inspection and maintenance during plant operation, these custom engineered and manufactured dampers eliminate costly down time and lost production. Guillotine Dampers - provide man-safe isolation of ductwork and equipment. Low-leak structural seal design and zero-leak bellowseal design - rectangular or round geometry. Louver Dampers - single (parallel and opposed) and double louver design allow "man-safe" isolation and precise flow control on precipitator, bag-house, scrubber and gas turbine fan inlet and outlets. - round, square or rectangular configurations available. Butterfly Dampers - single and multi-blade designs provide low cost isolation and flow control of flue gases. Low-leak or man-safe designs available. Diverter Dampers - directs gas flow from GTE (gas turbine exhaust) to heat recovery boiler or bypass system. Single flapper blade with unique belloseal design provides high (99.9%) sealing efficiency - man-safe design available with a temperature range to 1200°F. Poppet Dampers - provide low cost shut off in bag-house type collection systems. Low-leak or zero-leak configurations. Radial Vane Dampers - control direction of air flow entering fan inlets. Cantilevered and center hub blade design available. All dampers incorporate leading edge materials, design features and performance. A complete range of drive systems and sealing options are available. Drive Systems Electric Actuators Manual Gear Actuators Hydraulic Actuators Pneumatic Actuators Sealing Options Bellowseal Design (metal) Elastomeric Seals High Temp Tadpole Seal Replacement Seal Kits back to top Industrial Silencers CSR Parallel Baffles CSC-BN Full Flow CSC-BC Center Bullet CSC-BF Combined Treatment Air Development Corp. offers the most complete range of commercial silencers available. This insures that you get the most accurate selection possible, with the minimum amount of interpolation. We build all silencers on-size to your duct requirements, saving the cost and pressure penalties of transitions. There is no need to modify your duct work or connections, etc. so that you can fit one of our silencers. Careful design and effective cost control makes it possible for us to provide 'custom-size' silencers at 'fixed-size' prices. With Air Development you get the service you expect and the products you need. Design Features - Acoustically designed for maximum attenuation Aerodynamically designed baffles and pods with special noses and tails for reduced pressure drop Non-flammable, moisture resistant acoustical media protected from the air stream by galvanized mild steel perforated plate Galvanized mild steel casings with slip fit connections, both ends. CSR Rectangular Silencers High attenuation parallel baffle design Cataloged ratings for silencer selection Standard sizes to 48" x 46" and 84" long per unit Units may be 'stacked' to allow for larger silencer banks CSC Circular Silencers Three acoustical designs to choose from Cataloged ratings for silencer selection Standard sizes to 48" diameter and 84" long Connections and inside diameters which match duct size to reduce pressure drop Type CSC-BN Full Flow Silencers Acoustically packed interior walls Good low and mid band attenuation Unrestricted flow for low pressure drop Type CSC-BC Center Bullet Silencers Acoustically packed center bullets Increased attenuation in the higher frequencies Type CSC-BF Combined Treatment Silencers Acoustically packed interior walls and center bullet Highest attenuation possible with a circular silencer Accessories and Options Larger sizes and multi-module silencers Lifting lugs, flange connections, mounting feet, and suspension gussets to customer dimensions Special paint instead of galvanized finish Stainless steel or aluminum construction Added media protection; Mylar or fiberglass cloth Custom designed parallel baffle circular silencers Vibration isolation (refer to our Bulletin T1 -88) back to top