Damper valves type AFT-LDV (catalog) serve for the shut-off and/or flow regulation of media such as air and process gas.
Such valves find application in flue gas extraction installations, flue gas desulphurisation, gas utilisation SO2, SO3, NOx, dedusting of furnaces, glass factories, metallurgical plants for copper, zinc, plumb as well as cement factories, etc.
The construction is of welded nature, discs can be joined with shafts by welding (fixed discs) or by pins (dismountable discs).
Depending on the strength calculation such valves (in particular louver types) can be executed as divided into segments with shaft supports inside the ducts. The driving torque is transmitted to the second blades segment.
Taking into account the plant requirements and valve function, the valve can be delivered as quick-closing or quick-opening by using special actuating-damping devices.
Dampers of large dimensions are designed and manufactured in modules, which enable standard truck transport in segments and which are mounted on site.