Butterfly valves for air and gas 

VF, VFT and VFH butterfly valves are designed for regulation and control of air and gas flow.

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.


VF (AlSi) DN40 … DN150
VFT (AlSi) Rp 3/4 … Rp 2
VFH (GGG) DN40 … DN200

Operating pressure

VF, VFT 0 … 500 mbar
VFH 0 … 150 mbar

Media temperature

VF, VFT 60°C (200°C optional)
VFH 450°C



EC-type tested and certified according to EN13611

Gas Type

VF, VFT air and non-aggressive gases (Family 1-2-3, EN 437)
VFH heated air and flue gas


Technical Sheet Download File
Instructions Download File
CE Certifications Download File
Declaration Of Conformity Download File
RT Russian Certification Download File