Damper Valves With Sealing Air System
DV-T
Damper valves type DV-T as T (tandem) or DB (double blade) execution are of welded construction and are designed as 100% tight valves to shut-off media such as air or process gas.
Due to their material selection, precise execution and control technology, these dampers are usually important components of a plant with high expectations of reliability. As such, they are subject to thorough testing, especially concerning their tightness.
Common uses
Flue gas desulphurisation
Dust extraction of furnaces
Utilisation of SO2, SO3, NOX
Air-tight sealing of production processes in smelters
Chemical and paper industry
Glass smelters
Non-ferrous metals smelters
...
Diameter range DV-T
DN200 – DN9600 (larger sizes on request)
Design pressure
< 0,5 bar
Temperature range -20°C up to +750°C or acc. to customer request (max. working temperature up to 1100ºC)
Gland packing
graphite
(other depending on medium and temperature)
Installation of dampers
face-to-face length, working position
(acc. to customer requirements)
Materials
Depending on medium, temperature, customer reqiurements
Actuators
Pneumatic quarter turn or linear actuators with accessories acc. to technical and customer requirements
Electric quarter turn actuators with accessories acc. to technical and customer requirements
Special design:
- actuating systems equipped with electric actuators, electromagnetic couplings,
hydraulic dampers (quick closing or quick opening valves for emergency modes of operation)
- actuating systems with counterweights or return springs (quick mechanical safety actuators in case of emergency – closing or opening)
