Butterfly valve DVD

pneumaticelectrichydraulic

Damper valves type DV-TD as D (Double) execution are of welded construction and are designed as 100% tight valves to shut-off media such as air or process gas. The design involves injecting air produced by a fan between the two discs, in order to create overpressure and ensure a seal between the upstream and downstream sides of the valve. 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. Applications of Butterfly Damper Valves with Air Sealing 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 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)