gas valves vgg vgf vgh · 2013-01-25 · 3/18 building technologies cc1n7636en hvac products...
TRANSCRIPT
CC1N7636en 11.06.2008
Building TechnologiesHVAC Products
7636
VGG... VGF... VGH... Gas Valves VGG...
VGF...VGH...
• Single valves of class A for installation in gas trains • Safety shutoff valves conforming to EN161 in connection with actuators • Suitable for use with gases of gas families I...III • Gas valves in connection with actuators open slowly and close rapidly • 2-port valves of the normally closed type • ½“... DN125 • The gas valves are used in combination with the SKP… / SKL… actuators • As a control valve in connection with SQX... actuators and AGA60 adapter
(not as a safety shutoff valve) • Supplementary Data Sheets on actuators (refer to «Mechanical design») The VG... and this Data Sheet are intended for use by OEMs which integrate the gas valves in their products!
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Use The gas valves are used primarily - for application at gas-fired combustion plant - for gas trains at forced draft burners The gas valve is used as: - Shutoff valve (in combination with SKP1...) - Control valve with shutoff feature (in combination with SKP2..., SKP5… or SKP7…) - As shutoff or control valves in the supply air line of industrial combustion plant with
or without heat recovery system If the gas valves are used with gases other than those of gas families I...III, Siemens assumes no responsibility for the valve’s durability and life expectancy. All types of gas valves can be combined with any of these actuators.
Warning notes To avoid inquiry to persons, damage to property or the environment, the follow-ing warning notes must be observed! • Do not open, interfere with or modify the gas valves except when installing the
service replacement kit • Any opening of the gas valve, replacement of parts or modifications to the original
product is the user’s responsibility and carried out at his own risk • All activities (mounting, installation and service work, etc.) must be performed by
qualified staff • When used in connection with gas, the gas valves constitute part of the safety
equipment • In combination with SQX... or SKL... actuators, the gas valves must not be used as
safety devices • Fall or shock can adversely affect the safety functions. Such gas valves must not
be put into operation, even if they do not exhibit any damage • Not suitable gases or gas components causes loss of the safety shutoff function • It may not join contaminant / particles in the valve, because that could adversely
affect the safety shutoff function
Engineering notes Owing to the profile of valve disc, the gas valves are especially suited for control func-tions. Benefit: Good control performance and hardly prone to hunting in low-fire operation.
7636z10/0502
123
Legend 1 Stem 2 Profile 3 Valve disc
Profile (only for VGG... / VGF...)
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Mounting notes • Ensure that the relevant national safety regulations are complied with • The actuator can be mounted or replaced while the gas valve is under pressure • Refer also to the following Mounting Instructions
AGA66 M7643.2 74 319 0421 0 VGF M7636 / M7631 431920720 VGFDN40...80 M7636.1/M7633 431920500 VGG M7636 / M7631 431920720 VGG1/2"...3" M7636.1/M7633 431920500 VGH M7636 / M7631 431920720 VGx10.654 M7636.2 431923450 VGx10.804 M7636.2 431923450
• Check to ensure that the gas valve is tight when all components are connected • Check to ensure that the gaskets between the flanges and the gas valve must be
fitted The permissible mounting positions of the actuator must be observed, however (refer to the relevant Data Sheet). The direction of gas flow must be in accordance with the direction of the arrow on the valve body. The inactive gas valve is closed and opens when the actuator opens. • Check to ensure that cuttings not falling into the gas valve when mounting the con-
necting pipes. As the case arises, the gas valve can be opened and cleaned from below (spring dome)
• To prevent cuttings from falling into the gas valve, first mount the flanges on the
pipes and then clean the parts • Check to make certain that the bolts of the flanges are properly tightened and af-
terwards check to ensure that the gas valve is tight when all components are con-nected
Sealing / tightness
Mounting position
Direction of flow
Function
Only VGG...:
Only VGD20…
Only VGF.../VGH...
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Standards and certificates
Conformity to EEC directives - Electromagnetic compatibility EMC (immunity) - Directive for gas appliances - Directive for pressure devices
2004/108/EC 90/396/EEC 97/23/EC
ISO 9001: 2000 Cert. 00739
ISO 14001: 2004 Cert. 38233
For use in the U.S. / Canada, the gas valves carry type suffix «U» (see example) and , and listed. Example: VGG10.204U
Type reference
VGG10.154P x x --- VGG10.204P x x x VGG10.254P x x x VGG10.404P x x x VGG10.504P x x x VGG10.804P x x x VGG10.1541P x x --- VGG10.2041P x x --- VGG10.2541P x x --- VGG10.4041P x x --- VGG10.5041P x x --- VGG10.204 x x --- VGG10.254 x x --- VGG10.404 x x --- VGG10.504 x x --- VGF10.404P x x --- VGF10.504P x x --- VGF10.654P x x x VGF10.804P x x x VGF10.5041P x x --- VGF10.6541P x x --- VGF10.8041P x x --- VGF10.404 x x --- VGF10.504 x x --- VGF10.654 x x --- VGF10.804 x x --- VGH10.18050 x x x VGH10.19050 x x x VGH10.19150 x x x
Approvals in combina-tion with actuator
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Service notes • Each time a gas valve has been replaced, check to ensure that the gas valve oper-
ates correctly and that it is tight both internally and externally • Siemens gas valves may only be repaired by Siemens HVAC Repair Centers • VGH... gas valves are supplied without strainer. Fit a gas filter upstream of the gas
valve or an AGA... strainer (refer to «Accessories») by the gas inlet
Life cycle The combination gas valve VG... and actuator have a designed lifetime* of 100,000 burner startup cycles which, under use of gases to EN437 (or DVGW specification G260). This lifetime is based on the endurance tests specified in standard EN161 and the table containing the relevant test documentation as published by the European Association of Component Manufacturers (Afecor) (www.afecor.org). The designed lifetime is based on use of the gas valve VG... and actuator according to the manufacturer’s Data Sheet. After reaching the designed lifetime in terms of the number of burner startup cycles, or the respective time of usage, the gas valve VG... and actuator are to be replaced by authorized personnel. * The designed lifetime is not the warranty time specified in the Terms of Delivery
Disposal notes Local and currently valid legislation must be observed.
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Mechanical design The gas valves are dead closed in combination with actuator. The stem is guided on both sides of the valve disc, ensuring precise axial stroke and tight shutoff. A strainer made of stainless steel is fitted in the gas valve’s inlet and protects the gas valve, the seat and disc as well as downstream devices against dirt. For use with profile, the gas valves carry type suffix «P» (see example) Example: VGG10.154P A strainer type AGA... is available as an accessory item (refer to «Accessories»). The gas valves are supplied without strainer (refer to «Engineering notes»). They are of the normally closed one-way high-flow type. The swiveling disc of gas valve has no profile. The gas valves can be combined with the following types of actuators: Type reference Data Sheet Function SKP15... N7643 ON / OFF SKP25... N7643 ON / OFF with constant pressure con-
trol SKP25.7... with SQS37...
N7643 ON / OFF with pressure control and via electric signal alterable setpoint set-ting
SKP55... N7643 ON / OFF with differential pressure control, signal input → differential pres-sure
SKP75... N7643 ON / OFF with ratio control, signal input → static pressure
SKL25... (only for air) N7643 ON / OFF with constant pressure con-trol, slow closing 4...6 s, no function of safety shutoff
SQX... with AGA60 N4554 Steady position control, no function of safety shutoff
VGG... / VGF...
Stem
Strainer
Valve seat
VGH...
Strainer
Valve seat
Actuators
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Type summary (other types of gas valves on request)
Perm. operating pressure in
mbar
Number of connections Type reference
With profile Without profile
Nominal size
Material
Europe
(to EN)
Other
countries
Air flow rate
at
Δp = 1 mbar
/ m³ / h
Test point
RP ¼ 3)
Pilot gas
G ¾ 4)
Without stroke
limitation
With stroke
limitation 1)
Without stroke
limitation
With stroke
limitation 1)
Internally threaded to ISO 7/1 ½“ Die-cast al. 1200 1200 4.8 4 --- VGG10.154P VGG10.1541P --- ---
¾“ Die-cast al. 1200 1200 (1400)* 8.9 4 --- VGG10.204P VGG10.2041P VGG10.204 ---
1“ Die-cast al. 1200 1200 (1400)* 13.3 4 --- VGG10.254P VGG10.2541P VGG10.254 ---
1 ½“ Die-cast al. 600 600 (1400)* 32.3 4 --- VGG10.404P VGG10.4041P VGG10.404 ---
2“ Die-cast al. 600 600 (1400)* 47.4 4 --- VGG10.504P VGG10.5041P VGG10.504 ---
3“ Cast iron 600 600 (700)* 85.4 2 2 VGG10.804P --- --- ---
* Only for use in Australia
With flange, PN16, to ISO 7005
DN40 Cast iron 600 600 32.3 4 --- VGF10.404P --- VGF10.404 ---
DN50 Cast iron 600 600 47.4 4 --- VGF10.504P VGF10.5041P VGF10.504 ---
DN65 Cast iron 600 600 (700)* 74 2 2 VGF10.654P VGF10.6541P VGF10.654 ---
DN80 Cast iron 600 600 (700)* 85.4 2 2 VGF10.804P VGF10.8041P VGF10.804 ---
* Only for use in Australia
Flap type gas valves: High-flow with swing type disc.
Great closing force.
Version without strainer, to DIN, only for use on plant with gas strainer.
We recommend to install a strainer (refer to «Accessories» AGA80, AGA90 or AGA91!
These gas valves may only be revised by Siemens Repair Centers
DN80 Cast iron 300 600 (700)* 128.4 4 1 --- --- VGH10.18050 ---
DN100 Cast iron 300 400 (700)* 199.5 4 1 --- --- VGH10.19050 ---
DN125 5) Cast iron 250 250 (500)* 277.6 4 1 --- --- VGH10.19150 ---
* Only for use in Australia with SKPxx.xxxFxx (must be checked by application side)
1) Cannot be used with attached pressure
governor 4) Inlet side, VGF... with one connection on
each side 2) Flow rate reduced by 20 % 5) Only for SKPx5.xxxFxx 3) On inlet and outlet side
Ordering When ordering, please give the complete gas valve type reference. Actuator and gas valve are supplied as single packs. Example: 1 piece VGF10.654P flanged valve DN65 1 piece actuator
Legend (also refer to «Dimensions»)
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Accessories
Manual adjuster AGA61
Adapter for SQX... actuators AGA60Consisting of 2 stem parts and a connecting flange
Gasket kit to SKP... / SKL25... AGA66- Between actuator SKP… / SKL25… and gas valve VG… - For increasing of degree of protection from IP54 up to IP65 - Refer to Mounting Instruction M7643.2 (74 319 0421 0) Only VGG10.154…, VGG10.204…, VGG10.254…, VGG10.404…: When used in connection with AGA66, the maximum flow rates are reduced by about 25 %.
With circlip and 1 mm mesh size. Type reference of gas valve Type reference of strainer VGH10.18050 / DN80 AGA80 VGH10.19050 / DN100 AGA90
VGH10.19150 / DN125 AGA91
The strainers can be fitted in the flange sections of the gas valves, either on the gas inlet or gas outlet side.
VGH... Strainer
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Technical data Valve class in connection with actuator A conforming to EN161
(except with SQX... / SKL...) Group 2 (EN161) Perm. medium temperature 0...60 °C Weight Refer to «Dimensions» Connecting flanges (VGF..., VGH...) PN16 to ISO 7005-2 Required flow rate Refer to «Flow chart» Perm. mounting position
7648z09/0603
(refer to «Mounting notes»)
Operating pressure Refer to «Type summary» Types of gases Refer to «Use» Strainer (only for VGG... / VGF...) Built-in, mesh size 0.9 mm Storage DIN EN 60721-3-1 Climatic conditions Class 1K3 Mechanical conditions Class 1M2 Temperature range -20...+60 °C Humidity <95 % r.h. Transport DIN EN 60721-3-2 Climatic conditions Class 2K3 Mechanical conditions Class 2M2 Temperature range -20...+60 °C Humidity <95 % r.h. Operation DIN EN 60721-3-3 Climatic conditions Class 3K3 Mechanical conditions Class 3M3 Temperature range -10...+60 °C Humidity <95 % r.h.
General unit data
Environmental conditions
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Function
7636
z19/
0805
pE
Application example VGG... complete with SKP25...
Sectional view VGG... complete with SKP25...
pE
7636
z20/
0805
Sectional view of VGG...
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Function (cont´d)
pE
7636
z23/
0408
Application example VGF... complete with SKP25...
Sectional view VGF... complete with SKP25...
pE
7636
z22/
0408
Sectional view of VGF...
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Function (cont´d)
7636
z06e
/010
0
StrainerStrainer
Fully closed Fully open
Application example VGH... complete with SKP25...
Sectional view VGH... complete with SKP25...
7636
z21/
0805
pE
Sectional view of VGH...
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Flow chart for VG... (For fully open gas valves only)
1000
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
23
45
710
23
45
710
02
34
57
1000
23
45
7m
/ h
1N
atur
al g
asm
/ h
2P
ropa
nem
/ h
3To
wn
gas
m /
h4
Air
43
210
007
54
32
100
75
43
210
75
43
2
34
57
103
45
710
02
34
57
1000
23
45
7 54
32
1000
75
43
210
07
54
32
107
54
32
pmbar
VGG
VGF
1/2"
3/4"
1"
DN40; 1
1/2" DN50
; 2"
DN65DN80
; 3"
DN80VG
HDN10
0 DN1251)
3)
3)
3)
1) C
orre
spon
ding
to fu
lly o
pen
v
alve
or g
over
nor
2) W
ithou
t stra
iner
s3)
Flo
w ra
te o
f val
ves
with
thro
ttle
2
0 %
low
er
Iff p
ossi
ble
sele
ct fl
ow ra
tew
ithin
bol
d lin
es!
7636
d01e
/060
8
Flow
cha
rt
For c
ontr
ol p
erfo
rman
ce re
ason
s, w
hen
usin
gth
e SK
P2...
act
uato
rs w
ith in
tegr
ated
gove
rnor
, the
nom
inal
val
ve s
ize
shou
ld n
ot b
eto
o la
rge.
Thi
s ap
plie
s in
par
icul
ar to
bur
ners
burn
ing
smal
l am
ount
s of
gas
in th
e lo
w-fi
repo
sitio
n an
d to
bur
ners
cha
ngin
g fr
omhi
gh-fi
re to
low
-fire
in le
ss th
an 5
s.
Con
vers
ion
fact
ors
1 N
atur
al g
as
1
.24
2 Li
quef
ied
petr
oleu
m g
as
0.77
3 To
wn
gas
1
1.
464
Air
f =
1
Cal
cula
tion
fo fa
ctor
"f"
For o
ther
type
s of
gas
es
dv =
den
sity
ratio
to a
ir
f =dv
(gas
)1
Flow
rate
m /
air
x W
obbe
num
ber (
MJ/
m )
= b
urne
r out
put (
MJ/
h)
Cal
cula
tion
exam
ple
Ava
ilabl
e pr
essu
re d
rop
acro
ss th
e va
lve
2
mba
r R
equi
red
flow
rate
6
0 m
/h
natu
ral g
asS
elec
tion
acco
rdin
g to
cha
rt
D
N1
1/2"
(poi
nt o
f int
erse
ctio
n of
2 m
bar a
nd 6
0 m
/h
natu
ral g
as)
3
3
33
___ Maximum flow rate (gas valve fully open)
1) The valve curves shown represent gas valves with no strainer. Each strainer reduces the flow rate by about 8 % The bold curves represent the recommended pressure drop ranges. Gas valves with higher pressure drops can cause excessive flow noise. Practical experience shows that applications outside the range confined by the bold characteristics could produce sig-nificant noise
Legend
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Flow chart (cont´d) • In the case of burners with low-fire flow rates, select a tightly sized gas valve (refer
to the Data Sheet of the relevant actuator) • If the available gas pressure exceeds the maximum permissible operating pres-
sure, use an upstream pressure controller to lower it • The pressure drop (curves of maximum flow) is based on a fully open gas valve Conversion of air flow rate to a corresponding gas flow rate (natural gas):
Abscissa Volumetric flow «QG» in m³/h
Density ratio «dv» to air
Conversion factor f = 1
dv
1 Air 1 1 2 Natural gas 0.61 1.28 3 Propane 1.562 0.8 4 Town gas 0.46 1.47
Conversion to air (m³ / h) from other types of gases:
QL= QGf
QL = air volume in m³ / h that produces the same pressure drop as «QG»
When used in connection with actuators having an integrated governor, the nominal valve size should not be selected too large to ensure good control performance.
Note:
Basis for scale
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Dimensions Dimensions in mm
VGH... / DN80...125 E G 3/4
H
P
Q
R
KA B
N M L
S T
F
4 x Rp 1/4
J
7636m05/0502
VGF... / DN 40...50
86S T
4 x Rp 1/4
J
C
D
80
60 E
F
A B K
R
Q N M L
P
7636m04/0502
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Dimensions (cont´d) Dimensions in mm
VGF... / DN 65...80
86
G G´
Rp 1/4Rp 1/4 P
Q N M L
R
KA B
E
F80C
DS2 x G 3/4
J H
7636m07/0502
VGG… / 3“
H
86GG
Rp 1/4Rp 1/4
J
T2 x G 3/4
E
F
D
C
DN
80
DN
SW
7636m08/0502
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Dimensions (cont´d) Dimensions in mm
VGG ½“...2“ 86
DN
SW
4 x Rp 1/4
TS
E
F
80
D
C
J DN
7636m01/0502
Mounting surface for actuator or AGA60 adapter flange for SQX... actuator
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Building Technologies CC1N7636en HVAC Products 11.06.2008
Dimensions (cont´d)
Tabl
e of
dim
ensi
ons
Typ
VGG
10.1
5...
VGG
10.2
0...
VGG
10.2
5...
VGG
10.4
0...
VGG
10.5
0...
VGG
10.8
0...
VGF1
0.40
...VG
F10.
50...
VGF1
0.65
...VG
F10.
80...
VGH
10.1
80...
VGH
10.1
90...
VGH
10.1
91...
DN
1)
1/2"
3/4"
1" 1 1/
2"2" 3" D
N40
DN
50D
N65
DN
80
DN
80D
N10
0D
N12
5
A ---
---
---
---
---
---
13 13 16,5
19 15 16 3
B ---
---
---
---
---
---
3 3 3 3 3 3 3
C 96 96 96 126
130
191
126
130
191
191
---
---
---
D 79 79 79 102
107
163
102
107
163
163
---
---
---
E 80 80 80 126
126
185
126
126
185
185
160
160
160
F 109
109
109
150
170
310
200
230
290
310
310
350
400
G ---
---
---
---
---
110
---
---
108
118
102
102
102
G´
---
---
---
---
---
110
---
---
108
118
102
102
102
H ---
---
---
---
---
68 ---
---
95 102
105
105
121
J 32 32 32 41 50 100
41 50 92 100
159
166
174
K ---
---
---
---
---
---
19 19 19 19 19 19 19
L ---
---
---
---
---
---
150
165
185
200
200
220
250
M ---
---
---
---
---
---
110
125
145
160
160
180
210
N ---
---
---
---
---
---
88 102
120
131
131
157
187
P ---
---
---
---
---
---
45°
45°
45°
22,5
°
22,5
°22
,5°
22,5
°
Q ---
---
---
---
---
---
90°
90°
90°
45°
45°
45°
45°
R ---
---
---
---
---
---
4 4 4 8 8 8 8
S 28 28 28 34 34 ---
36 42 ---
---
95 95 95
T 31 31 31 34 34 62 36 42 ---
---
95 95 95
SW*
46 46 46 60 75 120
---
---
---
---
---
---
---
kg 0,8
0,8
0,75
1,4
1,95
13,4
6 7,5
15,3
17,9
16,3
18,6
23,4
2)3)
DN
N
omin
al s
ize,
dim
ensi
on fo
r con
nect
ion
of m
ediu
m
1)
Flan
ge c
onfo
rmin
g to
ISO
700
5-2
2)
With
stro
ke li
mita
tion
3)
With
out s
troke
lim
itatio
n R
N
umbe
r of b
oreh
oles
; for
sta
ndar
ds fo
r fla
nges
and
thre
ads,
refe
r to
«Typ
e su
mm
ary
gas
valv
es»
* W
idth
acr
oss
flats
©2008 Siemens Building Technologies HVAC Products GmbH Subject to change!