SiemensAGBuildingTechnologiesDivision
VGDSeries
TechnicalInstructionsDocumentNo.7631
VGDxx.xxxUNovember08,2017
VGDxx.xxxUGasValvesforusewithSKPxx.xxxUelectrohydraulicactuators
VGD20.xxxU VGD40.xxxU ISO9001and14000REGISTEREDFIRM
OnlywithseriesSKPxx.xxxUxactuators
Description ThenormallyclosedVGDxx.xxxUseriesofmodulardoublebodygasvalvescombinewithSKPxx.xxxUserieselectrohydraulicactuatorstoprovidesafetyshutoff,gaspressureregulationand/orairgasratiocontrolforcommercialorindustrialgasburners.
Table1.VGDxx.xxxUmodelnumbers
ModelNumbers Bodystyle ConnectionVGD20.253U Double NPTthreadVGD20.323U Double NPTthreadVGD20.403U Double NPTthreadVGD20.503U Double NPTthreadVGD40.065U Double NPTthreadVGD40.080U Double NPTthreadVGD40.100U Double ANSIflangeVGD40.150U Double ANSIflange
TechnicalInstructions VGDSeriesDoubleValvesDocumentNumberCC1N7631us November08,2017
Page2 SiemensAGBuildingTechnologiesDivision
FeaturesAllModels
ULlisted,FMapproved,CSAcertified,IRIapprovable,ISO9001and14000certified.CE,Australianapprovedversionsavailable
inchNPTpressuretapsontheinletandoutletandbetweenmainvalves(seeTable2fordetails)
Stainlesssteelmeshinletfilterprotectsthevalveseat(s)aswellasdownstreamcomponents
Dualstemguidesensureprecisediscalignmentandtightshutoff ValvesinconnectionwithSKPxx.xxxUactuatorsopenslowlyandcloserapidly
VGD20.xxxUmodels CompactVGD20.xxxUdoublevalvebodiesconsistof2safetyshutoffvalvesinseries.Thefirst(inlet)valvehasaflatvalvediscapplicableforsafetyshutofffunctiononly.Thesecond(outlet)valvehasacontouredvalvediscforusewithpressureregulatingactuators(SKP2x.xxxU,SKP5x.xxxU,SKP7x.xxxU)
A1inchNPTventconnectionbetweenthevalves EachVGD20.xxxUdoublevalverequires2threadedmountingflanges(AGFxx.xxU).Each
flangeincludesthenecessaryinstallationhardware(bolts,nutsandOring).EachmountingflangehasainchNPTpressuretap.Theflangescanbepremountedontothepipe,andthenboltedontotheVGD20.xxxUgasvalvebody.Thisfeatureeliminatestheuseofpipeunionsandpermitsthegasvalveassemblytobeeasilyremovedfromagastrain
Connectingpatternofthe1...2inchAGFxx.xxUflangesareidentical.ThisspacepermitsanyAGFxx.xxUflangetobemountedtoanyVGD20.xxxUvalvebody
NOTE:VGD20.xxxUvalvesandAGFxx.xxUflangesmustbeorderedasseparateitems(seeTables2and3).
VGD40.xxxUmodels CompactVGD40.xxxUdoublevalvebodiesconsistof2safetyshutoffvalvesinseries Eachindividualsafetyshutoffvalvehasdoubleseatstoachievehighflow Patentedseatconstructionwithindividualclosingspringforeachseattoassurereliable
shutoffandhighcloseoffpressurerating Fullportventlineconnectionplatesareavailable
NOTE:VGD40.xxxUvalvesandAGA40.xxxxUventconnectionplatesmustbeorderedas
separateitems(seeTables2and3).
VGDSeriesDoubleValves TechnicalInstructions DocumentNumberCC1N7631us November08,2017
SiemensAGBuildingTechnologiesDivision Page3
Application AllVGDxx.xxxUvalvescanbecombinedwithanySKPxx.xxxUseriesactuator.Theactuatorcanbemountedwhilethevalveisinstalledandunderpressure.SKPxx.xxxUregulatingactuatorsareapplicableforbothlowandhighsupplygaspressureapplications,eliminatingexcessiveregulatorinventories.Maximumpressureratingsvarywithvalvesize(seeTable2).AllVGDxx.xxxUvalvesperformthesefunctionsincombinationwitheachofthefollowingactuators:SKP15.xxxU SafetyshutoffSKP25.xxxU SafetyshutoffandconstantpressureregulationorzerogovernorSKP55.xxxU Safetyshutoff,pressureregulationanddifferentialpressureairgasratio
controlSKP75.xxxU Safetyshutoff,pressureregulationandadjustableair/gasratiocontrolSincemorethanonefunctioncanbeperformedbyasinglevalve,fewercomponentsandfittingsarerequiredsignificantlyreducingboththesizeandweightofthegastrain.Inaddition,smallerdiametergasvalvescanbeused.Fordetailsonvalvesizingseetheflowchart(figure3).
CAUTION: DonotoversizevalvesequippedwitharegulatingSKP2x.xxxU/SKP5x.xxxU/SKP7x.xxxUactuator.Oversizingmaylimitturndownandcouldcauseoscillations.
TechnicalInstructions VGDSeriesDoubleValvesDocumentNumberCC1N7631us November08,2017
Page4 SiemensAGBuildingTechnologiesDivision
Orderinginformation
Gasvalvesandactuatorsareorderedseparately.ForadditionalSKPxx.xxxUactuatorinformation,seethefollowingtechnicalinstructions:SKP15.xxxU 155751P25SKP25.xxxU 155752P25SKP55.xxxU 155753P25SKP75.xxxU 155754P25
NOTE:TheSKPxx.xxxUactuatorshaveanoperatingtemperaturerangeof14Fto140F(10Cto60C)!
Table2.Productnumbers
Product number
Size Maximumoperatingpressure
psi
Closeoffpressure
psi
CapacityCFH
Naturalgasat
P=1"W.C.
Numberof testpoints, 1/4"NPT
Valvebodymaterial
Inlet Outlet
VGD20.253U*) 1" 20 30 600 Twoinchandone1inchportbetweenvalves
AluminumVGD20.323U*) 1" 20 30 1200 AluminumVGD20.403U*) 1" 20 30 1,850 AluminumVGD20.503U*) 2" 20 30 2,300 Aluminum VGD40.065U 2"NPT 10 75 3,880 1 1 AluminumVGD40.080U 3"NPT 10 75 5,370 1 1 AluminumVGD40.100U** 4"flanged 10 30 9,680 1 1 AluminumVGD40.150U** 6"flanged 10 30 17,490 1 1 Aluminum
*)VGD20.xxxUdoublevalvesrequire2AGFxx.xxUthreadedflangesforinstallation**)VGD40.1x0Uflangedvalvesmustbeinstalledusingnonmetallicflangegaskets.Gasketmaterialmustbechemicallycompatiblewiththefuelgasbeingusedintheapplicationandmustbesofterthanthealuminumflangesealingsurface.Acceptablegasketmaterialsincludebutarenotlimitedto:rubber,paper,andplastic.ObserveflangebolttorquespecificationsasstatedintheVGD40installationinstructions.AlsorefertoANSI/ASMEB16.24.
VGDSeriesDoubleValves TechnicalInstructions DocumentNumberCC1N7631us November08,2017
SiemensAGBuildingTechnologiesDivision Page5
Accessories
Table3.AccessoriesPartNumber Description Notes
AGF10.25U Single1"connectingflangewith"portforVGD20.xxxU 2requiredpervalve.OrderseparatelyAGF10.32U Single1"connectingflangewith"portforVGD20.xxxU
AGF10.40U Single1"connectingflangewith"portforVGD20.xxxUAGF10.50U Single2"connectingflangewith"portforVGD20.xxxU AGA40.4050U 1NPTventconnectionplateforVGD40.xxxU Eachventconnection
includesNPTtestport,seeMountinginstructionM7631.3(7431902780)
AGA40.6580U 1NPTventconnectionplateforVGD40.xxxUAGA40.0100U 2NPTventconnectionplateforVGD40.xxxUAGA40.0150U 2NPTventconnectionplateforVGD40.xxxU
AGA61
ManualadjustingthrottleattachmentAGA61permitsVGDxx.xxxUseriesvalvestobeusedasadjustablelimitingorificevalves.Onceadjusted,theAGA61hasaprovisiontobesealedfromtampering.
AGA66
SealinggaskettoprovideNEMA3,NEMA3R,andNEMA4protection.GasketkittomountSKPxx.xxxUPlacebetweenactuatorSKPxx.xxxUandvalveVGDxx.xxxUIncreasesdegreeofprotectionfromIP54toIP65RefertoMountingInstructionM7643.2(7431904210)
TechnicalInstructions VGDSeriesDoubleValvesDocumentNumberCC1N7631us November08,2017
Page6 SiemensAGBuildingTechnologiesDivision
SpecificationsApprovals
Agencyapprovals/standards UL/429,FM/7400,CSA/ANSIZ21.21/CSA6.5C/IIRIapprovableAgencymarksapplyonlyforVGDxx.xxxUseriesgasvalvebodiesassembledwithSKPxx.xxxUactuators.
Operatingenvironment
Maximumoperatingpressure SeeTable2Maximumbackpressure(differential) VGD20.xxxU:2psi(150mbar) VGD40.xxxU:4psi(300mbar)Closeoffpressure SeeTable2Permissiblegastemperature 14Fto140F(10Cto60C)Permissibleoperatingtemperature 14Fto140F(10Cto60C)
Use SiemensgasvalvesareinaccordancewithUL429.Thevalveisusedas: Safetyshutoffvalve(inconnectionwithSKP15.xxxU) Controlvalvewithsafetyshutofffunction(inconnectionwithSKP25.xxxU,SKP5x.xxxUor
SKP7x.xxxU)
Perm.mountingposition
7631z01us/0815
Operatingpressure SeeTypesummary
Typesofgases Suitablenaturalgases,propane,butaneandairFormoreinformationseeUse.
Strainer Builtin,meshsize0.9mm
VGDSeriesDoubleValves TechnicalInstructions DocumentNumberCC1N7631us November08,2017
SiemensAGBuildingTechnologiesDivision Page7
SpecificationsPhysicalcharacteristics
Bodymaterials SeeTable2Weight SeeTables4
Connections Pipeconnections NPTthreadsorANSIclass150flanges(seeTable2)
Pressureandventtaps SeeTables2and3
Operation AllVGDxx.xxxUgasvalvesarenormallyclosed,twowayvalves.Thevalveshaveastandard,integral,stainlesssteelmeshfilter(0.9mm)intheinlettoprotectthedownstreamcomponentsagainstcontamination.AllvalveshaveNPTportsforpressuretestconnection.AfullsizeventconnectionplateisavailableasanaccessoryforVGD40.xxxUvalves.SeeTable2and3fordetailsonportsandventconnectionplates.
AGF10... AGF10...
7631z50us/0815
Figure1.SectionalviewofVGD20.xxxUVGD20.xxxUdoublevalvesconsistoftwovalvesinseries.Thefirst(inlet)valvehasaflatvalvediscsuitableforthesafetyshutofffunctiononly.Thesecond(outlet)valvehasacontouredvalvediscforstableregulatingcontrolandsmoothreleaseofgas.
TechnicalInstructions VGDSeriesDoubleValvesDocumentNumberCC1N7631us November08,2017
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Operation,continued
7631z53us/1215
Figure2.SecondviewofVGD40.xxxUflangemodelsVGD40.xxxUdoublevalvesconsistoftwovalvesinseries.Eachvalvehasadoubleseattoachievehighflow(seeFigure2).Closingsprings:Eachdoubleseatusesonepairofsprings.Thespringforcesactseparatelyasclosingforcesontheindividualvalveseats.
VGDSeriesDoubleValves TechnicalInstructions DocumentNumberCC1N7631us November08,2017
SiemensAGBuildingTechnologiesDivision Page9
Gasflowcharts
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 0.641
cf/h Propane gas 1.522
cf/h Butane gas 2.003
cf/h Air 1.004
m3/h Air 1.004
Sp. Gr.
1,000700500400300
200
100
70504030
20
107543
2
10,70,50,40,3
0,2
1,000700500400300
200
100
70504030
20
107543
2
10,70,50,4
W.C. mbar
Pres
sure
dro
p
p
7631
t06u
s/12
15
VGD20...
VGD40...
Figure3.Sizingdoublevalves
Assumptions:1)Pressuredownstreamofvalveisatmospheric2)Maximumgastemperatureof140F3)Valveinfullyopenposition
NOTE:PressuredropistotaldropacrossbothvalveswhenusingaSKPx5.xxxUactuator,
withorwithoutanAGA66.
CAUTION:DonotoversizevalvesequippedwithregulatingactuatorsSKP2x.xxxU,SKP5x.xxxUorSKP7x.xxxU.Oversizingmaylimitturndownandcouldcauseoscillations.
TechnicalInstructions VGDSeriesDoubleValvesDocumentNumberCC1N7631us November08,2017
Page10 SiemensAGBuildingTechnologiesDivision
DimensionsDimensionsinInches(mm) VGD20.xxxU
AG
F10.
..
AGF10...
1/4" NPT
D
3-1/
8(8
0)
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(1
03)
1-1/
4(3
0)
Table4.VGD20.xxxUdimensionsininches(mm)with2flangesAGF10.xxUValvemodel NominalsizeD
inchLength(L)
inch(mm)
Weightpounds(Kg)
VGD20.xxxU 1 10.59+2x1.02(269+2x26)
7(3.2)
1 10.59+2x1.02(269+2x26)
7(3.2)
1 10.59+2x1.02(269+2x26)
7(3.2)
2 10.59+2x1.18(269+2x30)
7(3.15)
VGDSeriesDoubleValves TechnicalInstructions DocumentNumberCC1N7631us November08,2017
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Dimensions,continuedDimensionsinInches(mm)VGD40.065U/VGD40.080U
a)
a)
GS
F
A
7631m21us/1215
a)Baseplate
TechnicalInstructions VGDSeriesDoubleValvesDocumentNumberCC1N7631us November08,2017
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Dimensions,continuedDimensionsinInches(mm)VGD40.100U/VGD40.150U
M
V
SG
A
F
a)
a)
7649
m05
us/0
815
Table5.VGD40.xxxUdimensionsininches(mm)Type A
inch(mm)
Binch(mm)
Cinch(mm)
Dinch(mm)
Einch(mm)
Finch(mm)
Ginch(mm)
Hinch(mm)
Iinch(mm)
JinchNPT
K(SW*)inch(mm)
L(d=)inch(mm)
M(d=)inch(mm)
Sinch(mm)
Tinch(mm)
Uinch(mm)
Vinch(mm)
VGD40.065U11.42(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" 4(100)
5.5(139.7)
0.75(19)
1.77(45)
3.64(92.5)
0.80(20.4)
7.01(178)
VGD40.080U12.20(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)
VGD40.100U13.78(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)
VGD40.150U18.90(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=widthacrossflats
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Dimensions,continuedDimensionsinInches(mm) VGD40.xxxUvalvewithventconnectionplateOption: a)Baseplate b)VentconnectionplateAGA40.xxxxU(optional)tobeorderedseparately a)andb)areinterchangeable
2A
7631z49us/0815
Table6. VGD40.xxxUdimensionsininches(mm)withmountedventconnectingplate.Valvemodel N
inch(mm)
Oinch(mm)
Pinch(mm)
Qinch(mm)
Rinch(mm)
Weightpounds(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)
TechnicalInstructions VGDSeriesDoubleValvesDocumentNumberCC1N7631us November08,2017
Page14 SiemensAGBuildingTechnologiesDivision
Dimensions,continued
Table 7. AGA40.xxxxU Models
Ventconnectionplate(optional)
1/4" NPT
7631
m18
us/1
215
VGD4
0.06
5U
VGD4
0.08
0U
VGD4
0.10
0U
VGD4
0.15
0U
Ventconnectionthread"Z"
AGA40.6580U 1"NPTAGA40.0100U 2"NPTAGA40.0150U 2"NPT
Informationinthispublicationisbasedoncurrentspecifications.Thecompanyreservestherighttomakechangesinspecificationsandmodelsasdesignimprovementsareintroduced.Otherproductorcompanynamesmentionedhereinmaybethetrademarksoftheirrespectiveowners.SiemensAGBuildingTechnologiesDivisionBerlinerRing2376437RastattGERMANY
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DocumentNo.CC1N7631usCountryofOrigin:DE
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