VMF · Edition 02.11
4
1 .1 Examples of application
1 .1 .1 valVario double block valve with pressure regulator VCD
and VMF fitted to a forced draught burner
VCD
VMF
This type of control is used on one-stage forced draught burn-
ers or in one-stage boilers, it is also suitable for use with a
mechanical or electronic air/gas ratio control system.
1 .1 .2 valVario double block valve with variable air/gas ratio
control VCV and VMF fitted to a forced draught burner
VCV
p
F
p
L
VMF
With this type of continuous control, the mixture setting is
maintained over a wide control range while at the same time
preventing air deficiency.
1 .1 .3 Industrial burner with staged control
VAG
+VBY
BIC
AKT
IC 40 + BVA
M
LEH
EKO
EKO
VMV
VMF
VAS
The high output impulse at the burner generated by this type
of control produces a uniform temperature distribution and
good circulation of the furnace or kiln atmosphere, e.g. in heat
treatment furnaces in the iron and non-ferrous metal industries
or kilns for heavy clay and fine ceramics. The required lambda
value can be set using the fine-adjusting valve VMV and the
air adjusting cock LEH. Using the filter module VMF, the gas
flow upstream of the gas valve VAS is cleaned.
Application
