VF VFH
Butterfly valves for air and gas
VF 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.
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
|
