Flowrates - Damper Valves with Sealing Air System

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

• < < 0,5 bar
• Temperature range
• -20°C up to +750°C or acc. to customer request (max. working temperature up to 1050ºC)
• Packing gland : graphite (other depending on medium and temperature)
• Installation of dampers / face-to-face length / working position (acc. to customer requirements)

• 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)