Siemens VGG Series Owner's manual

Siemens AG Building Technologies Division
VGG Series
Technical Instructions
Document No. 7636us
VGG…
February 09, 2016
VGG10.xxxU Gas Valves
for use with SKPxx.xxxUx electro-hydraulic actuators
ISO 9001 and 14000
REGISTERED FIRM
Only with series SKPxx.xxxUx actuators
Description The normally closed VGG10.xxxU series of single body gas valves combined with
SKPxx.xxxUx series electro-hydraulic actuators to provide safety shut-off, gas pressure
regulation and/or air-gas ratio control for commercial or industrial gas burners.
Table 1. VGG10.xxxU model numbers
Model Numbers Body style Connection
VGG10.154U Single NPT thread
VGG10.204U Single NPT thread
VGG10.254U Single NPT thread
VGG10.404U Single NPT thread
VGG10.504U Single NPT thread
VGG10.654U Single NPT thread
VGG10.804U Single NPT thread

Technical Instructions VGG Series Valves
Document Number CC1N7636us
February 09, 2016
Page 2Siemens AG Building Technologies Division
Features UL listed, FM approved, CSA certified, IRI approvable, ISO 9001 and 14000 certified.
CE, Australian and Japanese approved versions available
¼" NPT pressure taps on the inlet and outlet (see Table 2 for details)
Stainless steel mesh inlet filter protects the valve seat as well as downstream components
Dual stem guides ensure precise disc alignment and tight shut-off
Valves in connection with SKPxx.xxxUx actuators open slowly and close rapidly
Contoured valve disc provides smooth release of gas and stable regulating control
Application All VGG10.xxxU valves can be combined with any SKPxx.xxxUx series actuator. The actuator
can be mounted while the valve is installed and under pressure.
SKPxx.xxxUx regulating actuators are applicable for both low and high supply gas pressure
applications, eliminating excessive regulator inventories. Maximum pressure ratings vary
with valve size (see Table 2).
All VGG10.xxxU valves perform these functions in combination with each of the following
actuators:
SKP15.xxxUx Safety shut-off
SKP25.xxxUx Safety shut-off and constant pressure regulation or zero governor
SKP55.xxxUx Safety shut-off, pressure regulation and differential pressure air-gas ratio
control
SKP75.xxxUx Safety shut-off, pressure regulation and adjustable air/gas ratio control
Since more than one function can be performed by a single valve, fewer components and
fittings are required, significantly reducing both the size and weight of the gas train. In
addition, smaller diameter gas valves can be used. For details on valve sizing refer to the flow
charts (figures 2 and 3).
CAUTION:
Do not oversize valves equipped with a regulating SKP25.xxxUx / SKP55.xxxUx /
SKP75.xxxUx actuator. Oversizing may limit turndown and could cause oscillations.

VGG Series Valves Technical Instructions
Document Number CC1N7636us
February 09, 2016
Siemens AG Building Technologies Division Page 3
Ordering
information
Gas valves and actuators are ordered separately. For additional SKPxx.xxxUx actuator
information, see the following technical instructions:
SKP15.xxxUx 155-751P25
SKP25.xxxUx 155-752P25
SKP55.xxxUx 155-753P25
SKP75.xxxUx 155-754P25
NOTE:
The SKPxx.xxxUx actuators have an operating temperature range of 14 °F to
140 °F (-10 °C to 60 °C)!
Table 2. Product numbers
Product number Size
NPT
Maximum
operating
pressure
psi
Close-off
pressure
psi
Capacity CFH
Natural gas at
P = 1"W.C.
Number of test
points, 1/4"NPT
Valve body
material
Inlet Outlet
VGG10.154U ½" 20 75 327 / 242* 2 2 Aluminum
VGG10.204U ¾" 20 75 614 / 442* 2 2 Aluminum
VGG10.254U 1" 20 75 914 / 686* 2 2 Aluminum
VGG10.404U 1 ½" 20 75 2,047 / 1,643* 2 2 Aluminum
VGG10.504U 2" 20 75 3,511 2 2 Aluminum
VGG10.654U 2 ½" 10 25 5,085 1 1 Cast iron
VGG10.804U 3" 10 25 6,158 1 1 Cast iron
* VGG10.xxxU valves, ½-through 1 ½-inch have reduced flow when used with AGA66 (NEMA 4 kit).
Capacities shown are with/without NEMA 4 kit
Accessories
Part Number Description
AGA61
Manual adjusting throttle attachment AGA61 permits VGG10.xxxU series valves to be used as
adjustable limiting orifice valves. Once adjusted, the AGA61 has a provision to be sealed from
tampering.
AGA66
Sealing gasket to provide NEMA 3, NEMA 3R, and NEMA 4 protection.
- Gasket kit to mount between actuator SKPxx.xxxUx and valve VGG10.xxxU
- Degree of protection increased from IP54 to IP65
- Refer to Mounting Instruction M7643.2 (74 319 0421 0)

Technical Instructions VGG Series Valves
Document Number CC1N7636us
February 09, 2016
Page 4Siemens 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 VGG10.xxxU series
gas valve bodies assembled with SKPxx.xxxUx
actuators.
Operating
environment
Maximum operating pressure See Table 2
Maximum back pressure (differential) 2 psi (150 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 in accordance with UL429.
The valve is used as:
-Safety shutoff valve (in connection with SKP15.xxxUx)
-Pressure regulation with safety shutoff function (in connection with SKP25.xxxUx,
SKP55.xxxUx or SKP75.xxxUx)
Perm. mounting
position
7631z01us/0815
Operating pressure See Type summary
Types of gases Suitable natural gases, propane, butane and air
Strainer Built-in, mesh size 0.9 mm
Physical
characteristics
Body materials See Table 2
Weight See Table 3
Connections Pipe connections NPT threads (see Table 2)
Pressure and vent taps See Table 2

VGG Series Valves Technical Instructions
Document Number CC1N7636us
February 09, 2016
Siemens AG Building Technologies Division Page 5
Operation All VGG10.xxxU gas valves are normally closed, two-way valves. The valves have a standard,
integral, stainless steel mesh filter (0.9 mm) in the inlet to protect the downstream
components against contamination.
VGG10.xxxU series gas valves have a contoured valve disc for stable regulating control and
smooth release (see Figure 1).
Sectional view of VGG10.xxxU valve
7636z13us/0116
Figure 1. Sectional view of VGG10.xxxU models
Closing spring:
The valve includes a closing spring. The spring force acts as closing force on the valve
seat.

Technical Instructions VGG Series Valves
Document Number CC1N7636us
February 09, 2016
Page 6Siemens AG Building Technologies Division
Gas flow charts
V
GG
1,000
700
500
400
300
200
100
70
50
40
30
20
10
7
5
4
3
2
1
0.7
0.5
0.4
0.3
0.2
cf/h 1 Natural gas 0.64
cf/h 2 Propane gas 1.52
cf/h 3 Butane gas 2.00
cf/h 4 Air 1.00
m3/h 4 Air 1.00
7 100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2
100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2 3
7 100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2
100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2 3
3 4 5 7 10 2 3 4 5 7 100 2 3 4 5 7 1000 2 3 4 5 7
Sp. Gr.
1,000
700
500
400
300
200
100
70
50
40
30
20
10
7
5
4
3
2
1
0,7
0,5
0,4
´´W.C. mbar
Pressure drop p
2,000
1/2"
3/4"
1"
11/2"
2"
2 1/2"
3"
7636z01us/0815
Figure 2. Sizing VGG10.xxxU valves without AGA66 NEMA 4 kit
Assumptions:
1) Pressure downstream of valve is atmospheric
2) Maximum temperature is 140 °F
3) Valve in fully open position

NOTE:
Pressure drop is for one valve when using SKPx5.xxxUx actuator, without a
NEMA 4 kit (AGA66).
CAUTION:
Do not oversize valves equipped with regulating actuators SKP25.xxxUx,
SKP55.xxxUx or SKP75.xxxUx Oversizing may limit turndown and could cause
oscillations.

VGG Series Valves Technical Instructions
Document Number CC1N7636us
February 09, 2016
Siemens AG Building Technologies Division Page 7
Gas flow charts, continued
V
GG
1,000
700
500
400
300
200
100
70
50
40
30
20
10
7
5
4
3
2
1
0.7
0.5
0.4
0.3
0.2
cf/h 1 Natural gas 0.64
cf/h 2 Propane gas 1.52
cf/h 3 Butane gas 2.00
cf/h 4 Air 1.00
m3/h 4 Air 1.00
7 100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2
100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2 3
7 100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2
100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7 100000 2 3
3 4 5 7 10 2 3 4 5 7 100 2 3 4 5 7 1000 2 3 4 5 7
Sp. Gr.
1,000
700
500
400
300
200
100
70
50
40
30
20
10
7
5
4
3
2
1
0,7
0,5
0,4
´´W.C. mbar
Pressure drop p
2,000
1/2"
3/4"
1"
1 1/2"
2"
2 1/2"
3"
7636z02us/0815
Figure 3. Sizing VGG10.xxxU valves with AGA66 NEMA 4 kit
Assumptions:
1) Pressure downstream of valve is atmospheric
2) Maximum temperature is 140 °F
3) Valve in fully open position

NOTE:
Pressure drop is for one valve when using SKPx5.xxxUx actuator, with a NEMA 4
kit (AGA66).
CAUTION:
Do not oversize valves equipped with regulating actuators SKP25.xxxUx,
SKP55.xxxUx or SKP75.xxxUx. Oversizing may limit turndown and could cause
oscillations.

Technical Instructions VGG Series Valves
Document Number CC1N7636us
February 09, 2016
Page 8Siemens AG Building Technologies Division
Dimensions
Dimensions in Inches (mm)
VGG10.xxxU
Ø3.8" (96.52 mm)
Inch
J
Inch
W
D
1/4" NPT
ST
F
ØE
7636m10us/0216

VGG Series Valves Technical Instructions
Document Number CC1N7636us
February 09, 2016
Siemens AG Building Technologies Division Page 9
Dimensions
Dimensions in Inches (mm)
Table 3. VGG10.xxxU models
Valve model Nominal
size
D
inch
(mm)
ØE
inch
(mm)
F
inch
(mm)
J
inch
(mm)
S
inch
(mm)
T
inch
(mm)
W
inch
(mm)
Weight
pounds
(kg)
VGG10.154U ½"3.11
(79)
3.15
(80)
4.29
(109)
1.26
(32)
1.22
(31)
1.10
(28)
1.81
(46)
1.65
(0.75)
VGG10.204U ¾"3.11
(79)
3.15
(80)
4.29
(109)
1.26
(32)
1.22
(31)
1.10
(28)
1.81
(46)
1.65
(0.75)
VGG10.254U 1"3.11
(79)
3.15
(80)
4.29
(109)
1.26
(32)
1.22
(31)
1.10
(28)
1.81
(46)
1.50
(0.70)
VGG10.404U 1 ½"4.02
(102)
4.96
(126)
5.89
(149.7)
1.61
(41)
1.34
(34)
1.34
(34)
2.36
(60)
3.30
(1.50)
VGG10.504U 2"4.21
(107)
4.96
(126)
6.68
(169.7)
1.97
(50)
1.34
(34)
1.34
(34)
2.95
(75)
4.00
(1.80)
VGG10.654U 2 ½"5.91
(150)
7.28
(185)
11.42
(290)
3.62
(92)
2.44
(62)
--- 3.94
(100)
32.50
(15.80)
VGG10.804U 3"5.91
(150)
7.28
(185)
12.20
(310)
3.94
(100)
2.44
(62)
--- 4.72
(120)
34.00
(15.50)
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design
improvements are introduced. Other product or company names mentioned herein may be the trademarks of their respective owners.
Siemens AG Building Technologies Division
Berliner Ring 23
76437 Rastatt
GERMANY
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Document No. CC1N7636us
Country of Origin: DE