Siemens VGD20.253U Owner's manual

SiemensAGBuildingTechnologiesDivision
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VGDSeries
TechnicalInstructions
DocumentNo.7631
VGDxx.xxxU
November08,2017

VGDxx.xxxUGasValves
forusewithSKPxx.xxxUelectro‐hydraulicactuators

VGD20.xxxUVGD40.xxxU

ISO9001and14000
REGISTEREDFIRM
  

OnlywithseriesSKPxx.xxxUxactuators
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DescriptionThenormallyclosedVGDxx.xxxUseriesofmodulardouble‐bodygasvalvescombine
withSKPxx.xxxU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.VGDxx.xxxUmodelnumbers
ModelNumbersBodystyleConnection
VGD20.253UDoubleNPTthread
VGD20.323UDoubleNPTthread
VGD20.403UDoubleNPTthread
VGD20.503UDoubleNPTthread
VGD40.065UDoubleNPTthread
VGD40.080UDoubleNPTthread
VGD40.100UDoubleANSIflange
VGD40.150UDoubleANSIflange
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

TechnicalInstructionsVGDSeriesDoubleValves
DocumentNumberCC1N7631us 
November08,2017
Page2SiemensAGBuildingTechnologiesDivision

Features
AllModels
ULlisted,FMapproved,CSAcertified,IRIapprovable,ISO9001and14000certified.
CE,Australianapprovedversionsavailable
¼“‐inchNPTpressuretapsontheinletandoutletandbetweenmainvalves(seeTable2
fordetails)
Stainlesssteelmeshinletfilterprotectsthevalveseat(s)aswellasdownstream
components
Dualstemguidesensureprecisediscalignmentandtightshut‐off
ValvesinconnectionwithSKPxx.xxxUactuatorsopenslowlyandcloserapidly
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VGD20.xxxUmodelsCompactVGD20.xxxUdouble‐valvebodiesconsistof2safetyshut‐offvalvesinseries.
Thefirst(inlet)valvehasaflatvalvediscapplicableforsafetyshut‐offfunctiononly.
Thesecond(outlet)valvehasacontouredvalvediscforusewithpressureregulating
actuators(SKP2x.xxxU,SKP5x.xxxU,SKP7x.xxxU)
A1‐inchNPTventconnectionbetweenthevalves
EachVGD20.xxxUdouble‐valverequires2threadedmountingflanges(AGFxx.xxU).Each

flangeincludesthenecessaryinstallationhardware(bolts,nutsandO‐ring).Eachmounting 
flangehasa¼‐inchNPTpressuretap.Theflangescanbepre‐mountedontothepipe,and 
thenboltedontotheVGD20.xxxUgasvalvebody.Thisfeatureeliminatestheuseofpipe 
unionsandpermitsthegasvalveassemblytobeeasilyremovedfromagastrain
Connectingpatternofthe1...2inchAGFxx.xxUflangesareidentical.Thisspacepermits
anyAGFxx.xxUflangetobemountedtoanyVGD20.xxxUvalvebody

NOTE:
VGD20.xxxUvalvesandAGFxx.xxUflangesmustbeorderedasseparateitems(see
Tables2and3).

VGD40.xxxUmodelsCompactVGD40.xxxUdouble‐valvebodiesconsistof2safetyshut‐offvalvesinseries
Eachindividualsafetyshut‐offvalvehasdoubleseatstoachievehighflow
Patentedseatconstructionwithindividualclosingspringforeachseattoassurereliable
shut‐offandhighclose‐offpressurerating
Fullportventlineconnectionplatesareavailable

NOTE:
VGD40.xxxUvalvesandAGA40.xxxxUventconnectionplatesmustbeorderedas
separateitems(seeTables2and3).


VGDSeriesDoubleValvesTechnicalInstructions
DocumentNumberCC1N7631us
November08,2017
SiemensAGBuildingTechnologiesDivisionPage3
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ApplicationAllVGDxx.xxxUvalvescanbecombinedwithanySKPxx.xxxUseriesactuator.Theactuator
canbemountedwhilethevalveisinstalledandunderpressure.

SKPxx.xxxU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VGDxx.xxxUvalvesperformthesefunctionsincombinationwitheachofthefollowing
actuators:

SKP15.xxxUSafetyshut‐off
SKP25.xxxUSafetyshut‐offandconstantpressureregulationorzerogovernor
SKP55.xxxUSafetyshut‐off,pressureregulationanddifferentialpressureair‐gasratio
control
SKP75.xxxU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seetheflow
chart(figure3).
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CAUTION:
DonotoversizevalvesequippedwitharegulatingSKP2x.xxxU/SKP5x.xxxU/
SKP7x.xxxUactuator.Oversizingmaylimitturndownandcouldcauseoscillations.

TechnicalInstructionsVGDSeriesDoubleValves
DocumentNumberCC1N7631us 
November08,2017
Page4SiemensAGBuildingTechnologiesDivision

Ordering
information
Gasvalvesandactuatorsareorderedseparately.ForadditionalSKPxx.xxxUactuator
information,seethefollowingtechnicalinstructions:
SKP15.xxxU155‐751P25
SKP25.xxxU155‐752P25
SKP55.xxxU155‐753P25
SKP75.xxxU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
Product
number
Size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
VGD20.253U*)1"2030600Two¼‐inchand
one1‐inchport
betweenvalves
Aluminum
VGD20.323U*)1¼" 20301200Aluminum
VGD20.403U*)1½"20301,850Aluminum
VGD20.503U*)2"20302,300Aluminum

VGD40.065U2½"NPT10753,88011Aluminum
VGD40.080U3"NPT10755,37011Aluminum
VGD40.100U**4"flanged10309,68011Aluminum
VGD40.150U**6"flanged103017,49011Aluminum
*)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.


VGDSeriesDoubleValvesTechnicalInstructions
DocumentNumberCC1N7631us
November08,2017
SiemensAGBuildingTechnologiesDivisionPage5

Accessories
Table3.Accessories
PartNumberDescriptionNotes
AGF10.25USingle1"connectingflangewith¼"portforVGD20.xxxU2requiredpervalve.
Orderseparately
AGF10.32USingle1¼"connectingflangewith¼"portforVGD20.xxxU
AGF10.40USingle1½"connectingflangewith¼"portforVGD20.xxxU
AGF10.50USingle2"connectingflangewith¼"portforVGD20.xxxU

AGA40.4050U1”NPTventconnectionplateforVGD40.xxxUEachventconnection
includes¼”NPTtestport,
seeMountinginstruction
M7631.3(7431902780)
AGA40.6580U1¼”NPTventconnectionplateforVGD40.xxxU
AGA40.0100U2”NPTventconnectionplateforVGD40.xxxU
AGA40.0150U2½”NPTventconnectionplateforVGD40.xxxU

AGA61

ManualadjustingthrottleattachmentAGA61permitsVGDxx.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SKPxx.xxxU
‐PlacebetweenactuatorSKPxx.xxxUandvalveVGDxx.xxxU
‐IncreasesdegreeofprotectionfromIP54toIP65
‐RefertoMountingInstructionM7643.2(7431904210)


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


VGDSeriesDoubleValvesTechnicalInstructions
DocumentNumberCC1N7631us
November08,2017
SiemensAGBuildingTechnologiesDivisionPage7

Specifications

Physical
characteristics


BodymaterialsSeeTable2
Weight SeeTables4

ConnectionsPipeconnectionsNPTthreadsorANSIclass150flanges
(seeTable2)
PressureandventtapsSeeTables2and3

OperationAllVGDxx.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.

Allvalveshave¼NPTportsforpressuretestconnection.Afullsizeventconnectionplateis
availableasanaccessoryforVGD40.xxxUvalves.
SeeTable2and3fordetailsonportsandventconnectionplates.


AGF10... AGF10...
7631z50us/0815
Figure1.SectionalviewofVGD20.xxxU

VGD20.xxxUdoublevalvesconsistoftwovalvesinseries.
Thefirst(inlet)valvehasaflatvalvediscsuitableforthesafetyshut‐offfunctiononly.
Thesecond(outlet)valvehasacontouredvalvediscforstableregulatingcontroland
smoothreleaseofgas.


TechnicalInstructionsVGDSeriesDoubleValves
DocumentNumberCC1N7631us 
November08,2017
Page8SiemensAGBuildingTechnologiesDivision

Operation,continued

7631z53us/1215


Figure2.SecondviewofVGD40.xxxUflangemodels

VGD40.xxxUdoublevalvesconsistoftwovalvesinseries.
Eachvalvehasadoubleseattoachievehighflow(seeFigure2).

Closingsprings:
Eachdoubleseatusesonepairofsprings.Thespringforcesactseparatelyasclosing
forcesontheindividualvalveseats.


VGDSeriesDoubleValvesTechnicalInstructions
DocumentNumberCC1N7631us
November08,2017
SiemensAGBuildingTechnologiesDivisionPage9

Gasflowcharts

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
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
cf/h Natural gas 0.64
1
cf/h Propane gas 1.52 2
cf/h Butane gas 2.00 3
cf/h Air 1.00 4
m3/h Air 1.00 4
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
0,3
0,2
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
7631t06us/1215
VGD20...
V
GD40...
Figure3.Sizingdoublevalves

Assumptions:
1)Pressuredownstreamofvalveisatmospheric
2)Maximumgastemperatureof140°F
3)Valveinfullyopenposition


NOTE:
PressuredropistotaldropacrossbothvalveswhenusingaSKPx5.xxxUactuator,
withorwithoutanAGA66.



CAUTION:
DonotoversizevalvesequippedwithregulatingactuatorsSKP2x.xxxU,
SKP5x.xxxUorSKP7x.xxxU.Oversizingmaylimitturndownandcouldcause
oscillations.

TechnicalInstructionsVGDSeriesDoubleValves
DocumentNumberCC1N7631us 
November08,2017
Page10SiemensAGBuildingTechnologiesDivision

Dimensions
DimensionsinInches(mm)
VGD20.xxxU
AGF10...
AGF10...
1/4" NPT
DØ 3-1/8 (80)
2-3/4
(69)
2-1/2
(63.5)
2-1/2
(63.5)
3/4
(19)
3/4
(19.5) 2-7/16
(61)
4-1/16
(103)
1-1/4
(30)

Table4.VGD20.xxxUdimensionsininches(mm)with2flangesAGF10.xxU
ValvemodelNominalsizeD
inch
Length(L)
inch
(mm)
Weight
pounds
(Kg)
VGD20.xxxU1”10.59+2x1.02
(269+2x26)
7
(3.2)
1¼“10.59+2x1.02
(269+2x26)
7
(3.2)
1½“10.59+2x1.02
(269+2x26)
7
(3.2)
2”10.59+2x1.18
(269+2x30)
7
(3.15)


VGDSeriesDoubleValvesTechnicalInstructions
DocumentNumberCC1N7631us
November08,2017
SiemensAGBuildingTechnologiesDivisionPage11

Dimensions,continued
DimensionsinInches(mm)

VGD40.065U/VGD40.080U


a)
a)
G
S
F
A
7631m21us/1215

a)Baseplate


TechnicalInstructionsVGDSeriesDoubleValves
DocumentNumberCC1N7631us 
November08,2017
Page12SiemensAGBuildingTechnologiesDivision

Dimensions,continued
DimensionsinInches(mm)

VGD40.100U/VGD40.150U
M
V
S
G
A
F
a)
a)
7649m05us/0815


Table5.VGD40.xxxUdimensionsininches(mm)
TypeA
inch
(mm)
B
inch
(mm)
C
inch
(mm)
D
inch
(mm)
E
inch
(mm)
F
inch
(mm)
G
inch
(mm)
H
inch
(mm)
I
inch
(mm)
J
inch
NPT
K(SW*)
inch
(mm)
L(d=)
inch
(mm)
M(d=)
inch
(mm)
S
inch
(mm)
T
inch
(mm)
U
inch
(mm)
V
inch
(mm)
VGD40.065U11.42
(290)
8.54
(217)
3.25
(82.5)
4.63
(117.5)
2.09
(53.1)
1.46
(37)
4.02
(102)
6.14
(156)
0.63
(16)
2½"4
(100)
5.5
(139.7)
0.75
(19)
1.77
(45)
3.64
(92.5)
0.80
(20.4)
7.01
(178)
VGD40.080U12.20
(310)
9.39
(238.5)
3.64
(92.5)
5.18
(131.5)
2.09
(47)
0.79
(20)
4.21
(107)
6.30
(160)
0.63
(16)
3"4.7
(120)
6.0
(152.4)
0.75
(19)
1.2
(30.5)
3.94
(100)
0.88
(22.4)
7.56
(192)
VGD40.100U13.78
(350)
10.52
(267.3)
4.33
(110)
5.70
(144.8)
1.93
(49)
1.95
(49.5)
5.16
(131)
7.56
(192)
0.63
(16)
‐‐‐ ‐‐‐ 7.5
(190.5)
0.75
(19)
2.83
(72)
4.55
(115.5)
0.87
(22)
8.74
(222)
VGD40.150U18.90
(480)
13.29
(337.5)
5.71
(145)
7.40
(188)
2.09
(53)
2.30
(58.5)
6.61
(168)
10.31
(262)
0.63
(16)
‐‐‐ ‐‐‐ 9.5
(241)
0.91
(23)
3.92
(99.5)
5.61
(142.5)
0.90
(22.9)
10.63
(270)
*)SW=widthacrossflats

VGDSeriesDoubleValvesTechnicalInstructions
DocumentNumberCC1N7631us
November08,2017
SiemensAGBuildingTechnologiesDivisionPage13

Dimensions,continued
DimensionsinInches(mm)
VGD40.xxxUvalvewithventconnectionplate

Option:a)Baseplate
 b)VentconnectionplateAGA40.xxxxU(optional)tobeorderedseparately
 a)andb)areinterchangeable
2
A
7631z49us/0815


Table6.VGD40.xxxUdimensionsininches(mm)withmountedventconnectingplate.
Valvemodel N
inch
(mm)
O
inch
(mm)
P
inch
(mm)
Q
inch
(mm)
R
inch
(mm)
Weight
pounds
(kg)
VGD40.065U 7.13
(181)
4.06
(103)
5.34
(135.6)
3.02
(76.59)
1.46
(37)
1.6
(7)
VGD40.080U 7.28
(185)
4.13
(105)
5.49
(139.5)
3.17
(80.5)
0.79
(20)
19
(8)
VGD40.100U 8.54
(210)
4.76
(121)
6.26
(159)
3.94
(100)
1.95
(49.5)
29
(13)
VGD40.150U 11.30
(287)
6.14
(156)
7.80
(198)
5.47
(139)
2.28
(58)
53
(24)


TechnicalInstructionsVGDSeriesDoubleValves
DocumentNumberCC1N7631us 
November08,2017
Page14SiemensAGBuildingTechnologiesDivision

Dimensions,continued

Table 7. AGA40.xxxxU Models
Ventconnectionplate(optional)
1/4"NPT
7631m18us/1215

VGD40.065U VGD40.080U VGD40.100U VGD40.150U
Vent
connection
thread"Z"
AGA40.6580U●● 1¼"NPT
AGA40.0100U
●2"NPT
AGA40.0150U
●2½"NPT

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
Yourfeedbackisimportanttous.Ifyouhave
commentsaboutthisdocument,pleasesendthem
to[email protected]
DocumentNo.CC1N7631us
CountryofOrigin:DE