Siemens VGD20.403U Istruzioni tecniche - Pagina 4
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Technical Instructions
Document Number CC1N7631us
November 08, 2017
Ordering
Gas valves and actuators are ordered separately. For additional SKPxx.xxxU actuator
information, see the following technical instructions:
information
SKP15.xxxU
SKP25.xxxU
SKP55.xxxU
SKP75.xxxU
Product
number
VGD20.253U *)
VGD20.323U *)
VGD20.403U*)
VGD20.503U*)
VGD40.065U
VGD40.080U
VGD40.100U **
4" flanged
VGD40.150U **
6" flanged
*) VGD20.xxxU double valves require 2 AGFxx.xxU threaded flanges for installation
**) VGD40.1x0U flanged valves must be installed using non‐metallic flange gaskets. Gasket material must be chemically
compatible with the fuel gas being used in the application and must be softer than the aluminum flange sealing surface.
Acceptable gasket materials include but are not limited to: rubber, paper, and plastic. Observe flange bolt torque
specifications as stated in the VGD40 installation instructions. Also refer to ANSI / ASME B16.24.
Page 4
155‐751P25
155‐752P25
155‐753P25
155‐754P25
NOTE:
The SKPxx.xxxU actuators have an operating temperature range of 14 °F to 140 °F
(‐10 °C to 60 °C)!
Table 2. Product numbers
Size
Maximum
Close‐off
operating
pressure
pressure
psi
1"
20
1¼"
20
1½"
20
2"
20
2½" NPT
10
3" NPT
10
10
10
Capacity
Number of test
CFH
psi
Natural gas
at
Inlet Outlet
P = 1" W.C.
30
600
Two ¼‐inch and
30
1200
one 1‐inch port
30
1,850
between valves
30
2,300
75
3,880
75
5,370
30
9,680
30
17,490
VGD Series Double Valves
Valve body
points,
material
1/4" NPT
Aluminum
Aluminum
Aluminum
Aluminum
1
1
Aluminum
1
1
Aluminum
1
1
Aluminum
1
1
Aluminum
Siemens AG Building Technologies Division