Butterfly valve DN2000three-bladed
with metal sealing
Buttefly valve 900x670fast-response
with protection lattice
Double butterfly valveDN700
with sealing air connection
Safety butterfly valveDN600
with pneumatic actuator and reserve air container soft-sealed

Air and flue gas dampers

We construct and produce air- and flue gas dampers given Your individual technical specification. Our solutions are especially suitable for the following areas:

  • ship catalysts
  • exhaust fumes of turbines and engines for the drying process of the tile and ceramic Industry as well as in the wood processing and cellulose processing Industry
  • energy recuperation plants
  • hot gas generators
  • thermal reactors
  • industrial boilers and thermal power stations with conventional boilers or boiling beds
  • shut-off dampers and regulating dampers for heat exchange and for particle separation
  • protection of the bag filters leading to the grinding stations
  • flue gas conduits of the rotary kiln, circulation to the coolers, circulation to the grinders in the cement industry
  • pipes of the furnace and the coke oven battery, heat exchangers, flue gas purification plant, direct reduction process in the steel industry
  • thermal post-combustion, flue gas purification plants and energy recuperation from flue gas in the chemical and petrochemical industry


Body: round, rectangular or customer-specific constructions 
Materials: S235JRG (1.0038), P265GH (1.0425), 16Mo3 (1.5415), 13CrMo44 (1.7335), 1.4301, 1.4541, 1.4571, 1.4828 and other materials on request
Sealing: soft sealing, metallic, sweeping seated, lamella sealing or with supply of sealing air
Operating pressure: up to 500 mbar
Temperatures: up to 650 °C, higher temperatures on request
Medium: air, dust-contamined air, flue gas
Flanges and Face-to-face dimensions:  upon customer requirements or according to NOVAL standard
Operation:  manual, electric, pneumatic with or without controller

The dampers can be equipped with additional external position switches/sensors.

Damper blades can be isolated.

Corrosion protection:

upon customer requirements or according to NOVAL standard