Technical
Instructions
VGD
Series
Double
Valves
Document
Number
CC1N7631us
November
08,
2017
Page
6
Siemens
AG
Building
Technologies
Division
Specifications
Approvals
Agency
approvals/standards
UL/429,
FM/7400,
CSA/ANSI
Z21.21/CSA
6.5
C
/
I
IRI
approvable
Agency
marks
apply
only
for
VGDxx.xxxU
series
gas
valve
bodies
assembled
with
SKPxx.xxxU
actuators.
Operating
environment
Maximum
operating
pressure
See
Table
2
Maximum
back
pressure
(differential)
VGD20.xxxU:
2
psi
(150
mbar)
VGD40.xxxU:
4
psi
(300
mbar)
Close
‐
off
pressure
See
Table
2
Permissible
gas
temperature
14
°F
to
140
°F
(
‐
10
°C
to
60
°C)
Permissible
operating
temperature
14
°F
to
140
°F
(
‐
10
°C
to
60
°C)
Use
Siemens
gas
valves
are
in
accordance
with
UL429.
The
valve
is
used
as:
‐
Safety
shutoff
valve
(in
connection
with
SKP15.xxxU)
‐
Control
valve
with
safety
shutoff
function
(in
connection
with
SKP25.xxxU,
SKP5x.xxxU
or
SKP7x.xxxU)
Perm.
mounting
position
7631z01us/0815
Operating
pressure
See
Type
summary
Types
of
gases
Suitable
natural
gases,
propane,
butane
and
air
For
more
information
see
Use
.
Strainer
Built
‐
in,
mesh
size
0.9
mm
