Butterfly Valves
Aluminum and cast iron butterfly valves
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.
Technical Data
Material/Connections
VF (AlSi) DN40 … DN150
VFT (AlSi) Rp 3/4 … Rp 2
VFH (GGG) DN40 … DN200
Media Temperature
VF, VFT 60°C (200°C optional)
VFH 450°C
Gas Type
VF, VFT air and non-aggressive gases (Family 1-2-3, EN 437)
VFH heated air and flue gas
Special version for Hydrogen (H2)
Operating Pressure
VF, VFT 0 … 500 mbar
VFH 0 … 150 mbar
Approvals
VF, VFT EC-type tested and certified according to EN1361
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