Siemens VGD20.253U Betriebsanleitung

SiemensAGBuildingTechnologiesDivision



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



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



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).



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

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

cf/h Propane gas 1.52

cf/h Butane gas 2.00

cf/h Air 1.00

m3/h Air 1.00

Sp. Gr.

1,000

700

500

400

300

200

100

0,7

0,5

0,4

0,3

0,2

1,000

700

500

400

300

200

100

0,7

0,5

0,4

´´W.C. mbar

Pressure drop p

7631t06us/1215

VGD20...

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...

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)



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