Volume control dampers are specially designed by our experts for low air leakages. We provide these in gi opposed blade type, aluminum extruded blade type, face and bypass. The blades are connected by suitable linkage to a controlling actuating device, like electrical actuator or fusible link. Blades are available with brass or nylon bush with gear operated/ms linkage facility for smooth and noiseless rotation. constructionbody : g.i. / aluminium / s.s. Sheet fabricatedblade : gi opposed blade / aluminium extruded blade typeactuator : actuator : 230 v. 1 ph ac / 415v.3 ph ac, input signal fire dampers : blades in fire damper are held in the open position using a high tensile spring and a fusible link. The fusible link is 'ul stamped' and operates at 74c, to close damper in case of fire. Thus, the spread of fire through the ducts is prevented. Specialtycompact structuresturdy constructionresistant to corrosionlong service lifecost-effective