VF VFH
Butterfly valves for air and gas
Valves can be operated manually using a lever (to setup the high-fire rate of the burner) or automatically using a servomotor (modulating or staged control) or a solenoid actuator (two-stage control).
The setting can be monitored on a graduated scale, this allows precise regulation ratios.
This type of device is suitable for air and gas adjustment in combustion processes, like industrial kilns, drying stoves, smelting and annealing furnaces.
Material/Connections
VF
– (AlSi) : DN40 … DN150
VFH
– (GGG) : DN40 … DN200
Operating pressure
VF : 0 … 500 mbar
VFH : 0 … 150 mbar
Media temperature
VF : 60°C (200°C optional)
VFH : 450°C
Approvals
VF : EC-type tested and certified according to EN13611
Gas Type
VF : air and non-aggressive gases (Family 1-2-3, EN 437)
VFH : heated air and flue gas