10
GB
VALVES UNIT
M
VGD 20.
DUNGS
Made in Germany
VGD 20 valve body
SKP 75
SKP 15
VCV L valve body
pG
pL
pF
VCV L (slow opening)
pF: chamber of
combustion signal
(possible)
Air signal withdrawal
pipe (polyethylene)
Minimum gas pressu-
re pressure switch
(1) Note: installation of the combustion chamber compensation tube is recommended in order to optimise opera-
tion of the valve.
pF: chamber of
combustion signal
(possible)
(1) Note: installation of the combustion chamber compensation tube is recommended in order to optimise opera-
tion of the valve.
Air signal withdrawal
pipe (polyethylene)
Gas signal withdrawal
pipe (rigid)
Minimum gas pressu-
re pressure switch