Data sheet Pressure independent balancing and control …€¦ · · 2016-04-18Data sheet...

1VD.C6.Q5.02 © Danfoss 11/2011SMT/SI

Data sheet

Pressure independent balancing and control valveAB-QM DN 10-250

• Trouble-freesegmentationofthebuildingproject.WhensectionsofaprojectarefinishedtheycannormallynotbehandedovertothecustomerwithafullyfunctionalHVACinstallation.HowevertheAB-QMwithaDanfossactuatorwillautomaticallycontroltheflow,evenwhenotherpartsoftheinstallationarestillunfinished.It’snotneededtoadjusttheAB-QMafterfinalisationoftheproject.

• Commissioningcosts,thecostsareclosetozerobecauseofaconvenientsettingprocedurewithouttheneedforflowcharts,calculationsormeasuringequipment.TheAB-QMvalvescanbesettoaprecisedesignvalueevenwhenthesystemisupandrunning.

• HalvedmountingcostsastheAB-QMvalvecoverstwofunctions,Balancing&Control

Theprecise flow control performance of theAB-QMwithaDanfossactuatorprovidesincreasedcomfortandsuperior Total Cost of Ownershipbecauseofsavingsmadeon:

• Efficientenergytransferandminimalpumpingcostssincetherearenooverflowsatpartialloadsbecauseoftheexactpressureindependentflowlimitation.

• Smallerpumpinvestmentsandlowerenergyconsumptionasthepumpheadneededislowerthaninthetraditionalsetup.Withthebuiltintestplugsitiseasytotroubleshootandfindtheoptimalsetpointforthepump.

• Reducedmovementsoftheactuatorsincethebuilt-indifferentialpressurecontrollerensurethepressurefluctuationsdonotinfluencetheroomtemperature.

• Achievingastabletemperatureinaroomleadingtoaloweraveragetemperatureatthesamecomfortlevel.

• Minimalflowcomplains,asthevalveperformsasdesigned.

• Minimalblockagecomplains,asthemembranedesignmakesAB-QMlesssusceptibletoblockagethanacartridgetypeconstriction.

Description

The AB-QM valve equipped with an actuator is a control valve with full authority and an automatic balancing function / flow limitation. Typical applications are: Temperature control with permanent automatic balancing on terminal units (chillers, air-handling units, fan coils, induction units, radiation panels and heat exchangers).

2 VD.C6.Q5.02 © Danfoss 11/2011 SMT/SI

Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250

Applications -variableflowsystems

Air handling unit (AHU) / fan coil unit (FCU)

AnAB-QMwithaDanfossactuatorisusedasacontrolvalveforterminalunits,likeanAHU(AirHandlingUnit),FCU(FanCoilUnit)orradiationpanel.TheAB-QMensuresandcontroltherequiredflowoneveryterminalunitandmaintainsHydronicbalanceinthesystem.

Becauseoftheintegrateddifferentialpressurecontrollerthecontrolvalvealwayshas100%authorityandthereforeoffersalwaysstablecontrol.Atpartialloadthereisnooverflow,contrarytoconventionalsolutions,becausetheAB-QMwillalwayslimittheflowtoexactlywhatisneeded.ByinstallingtheAB-QMthewholesystemisdividedincompletelyindependentcontrolloops.

ThereisafullrangeofDanfossactuatorsavailablefortheAB-QM,suitableforeverycontrolstrategy.ActuatorsareavailableforOn/Off,0-10Volt,4-20mAorfloatingpoint.

Radiation panel

LIN setti

ng st

ays c

onstant

at any

available

pres

sure

LOG setting sta

ys consta

nt at

any av

ailable

pres

sure

0 10 V0

100 %

Fora

nygiven

100

%setting

Control performance TheAB-QMhasalinearcontrolcharacteristic.TheAB-QMispressureindependentwhichmeansthatthecontrolcharacteristicisindependentfromtheavailablepressureandisnotinfluencedbyalowauthority.TheflowlimitationontheAB-QMisachievedbylimitingthestrokeandtheDanfossactuatorscalibratetothestrokeofthevalves.ThismeansthattheAB-QMkeepsitslinearcharacteristicindependentofthesettingordifferentialpressure.

BecauseofthepredictablecharacteristictheactuatorsontheAB-QMcanbeusedtochangetheresponsefromlineartologarithmic(equalpercentage).ThatmakestheAB-QMsuitableforallapplications,includingAHUs,wheretheequalpercentagecharacteristicisneededtogetastablecontrolloop.Theactuatorscanbeswitchedfromlineartologarithmicbychangingadipswitchsettingontheactuator.



Applications -constantflowsystems

InconstantflowsystemwithFCUsorinaonepipeheatingsystemtheAB-QMcanbeinstalledasanautomaticbalancingvalveineveryriser.TheAB-QMlimitstheflowtothesetvalue,thusautomaticallyachievinghydronicbalanceinthesystem.

There are numerous applications in which AB-QM can be used. Every time you need an automatic flow limiter or a control valve you can take advantage of the cost-saving properties of the AB-QM. That includes systems with (floor) heating/cooling, concrete core activation or radiation panels.

Note: For more application examples please contact your local Danfoss organization.



Ordering AB-QM threadedversion(withtestplugsandwithouttestplugs)

Picture DN Qmax.

(l/h)Ext. thread(ISO228/1)

Code No. AB-QM Ext. thread(ISO228/1)

Code No.

10LF 150G ½A

003Z1261G ½A

003Z1251

10 275 003Z1211 003Z1201

15LF 275G ¾A

003Z1262G ¾A

003Z1252

15 450 003Z1212 003Z1202

20 900 G 1A 003Z1213 G 1A 003Z1203

25 1.700 G 1 ¼A 003Z1214 G 1 ¼A 003Z1204

32 3.200 G 1 ½A 003Z1215 G 1 ½A 003Z1205

40 7.500 G 2A 003Z0760 AB-QM (DN 10-32) can not be upgraded to AB-QM with test plugs!50 12.500 G 2 ½A 003Z0761

AB-QMflangedversion

Picture DN Qmax.

(l/h)Flange

connection Code No.

50 12.500

PN 16

003Z0762

65 20.000 003Z0763

80 28.000 003Z0764

100 38.000 003Z0765

125 90.000 003Z0705

125HF 120.000 003Z0715

150 145.000 003Z0706

150HF 229.000 003Z0716

200 190.000 003Z0707

200HF 300.000 003Z0717

250 280.000 003Z0708

250HF 442.000 003Z0718

Set-pack (oneMSV-SandoneAB-QMwithouttestplugs)

Picture DN Qmax. (l/h)

Ext. thread (ISO228/1) Code No.

15LF 275G ¾ A

003Z1238

15 450 003Z1242

20 900 G 1 A 003Z1243

25 1.700 G 1 ¼ A 003Z1244

32 3.200 G 1 ½ A 003Z1245

• NoKvorauthoritycalculationsneeded.Flowistheonlyparametertobeconsideredwhendesigning.

• TheAB-QMalwaysfitstheapplicationbecausethemaximumsettingoftheAB-QMcorrespondswithinternationalstandardsforflowvelocityinpipes.

• TheAB-QMcanbeusedforallHVACapplicationssinceitcanhavealinearorlogarithmiccharacteristicwhencombinedwiththermalelectricorgearactuators.

• Compactdesign,essentialwhenonlylimitedspaceisavailable.Forexampleinfan-coilunits.

Easy implementation • Easycommissioning.Nospecializedstafformeasuringequipmentneeded.

• Easytroubleshooting.• Faststart-upbecauseAB-QMvalvesdon’t

needtobeflushedorde-airedbeforeuse.• Trouble-freesegmentationofthebuilding

project.TheAB-QMwillautomaticallycontroltheflow,evenwhenpartsoftheinstallationarestillunfinished.It’snotneededtoadjusttheAB-QMafterfinalisationofthebuildingproject.



Accessories & spare parts

TypeComments

Code No.To pipe To valve

Unionconnection(1pcs.)

R3/8 DN 10 003Z0231

R1/2 DN 15 003Z0232

R3/4 DN 20 003Z0233

R1 DN 25 003Z0234

R11/4 DN 32 003Z0235

R11/2 DN40 003Z0279

R2 DN 50 003Z0278

Tailpiecewelding(1pcs.)

Weld.

DN 15 003Z0226

DN 20 003Z0227

DN 25 003Z0228

DN 32 003Z0229

DN40 003Z0270

DN 50 003Z0276

Tailpiecesforsoldering(2nuts,2gaskets,2solderingnipples

12x1mm DN 10 065Z7016

15x1mm DN 15 065Z7017

Shut-off&protectionpiece(max.closingpressure16bar)DN10-32

003Z1230

Shut-off-plastic(max.closingpressure1bar) 003Z0240

HandleAB-QM(necessaryaccessoryifinstallingvalvewithoutactuator)

DN40-100 003Z0695

DN125-250 003Z0696

AdapterforAB-QMDN10,G½internalthreadforAB-QM,G3/8internalthread(1pcs.) 003Z3954

AdapterforAB-QMDN15,G¾internalthreadforAB-QM,G¾Aexternalthread(1pcs.) 003Z3955

AdapterforAB-QMDN20,G1internalthreadforAB-QM,G1Aexternalthread(1pcs.) 003Z3956

AdapterforAB-QMDN25,G5/4internalthreadforAB-QM,G5/4Aexternalthread(1pcs.) 003Z3957

AdapterAMV(E)15/16/25/35(AB-QMDN40-100,2nd.generation) 003Z0694

AdapterAME435forAB-QMDN40-100(1st.generation) 065Z0313

Strokelimiter-TWA(5pcs.inabag) 003Z1237

AdapterAME13SUforAB-QM(1st.generation) 003Z3959

AdapterAME13SUforAB-QM(2nd.generation) 003Z3960

StemheaterforAB-QMDN40-100/AME15QM 065B2171

StemheaterforAB-QMDN40-100/AME435QM 003Z0693

StemheaterforAB-QMDN125,150/AME55QM 065Z7022

StemheaterforAB-QMDN200,250/AME85QM 065Z7021

Ordering (continuous)

Combinations AB-QM with electrical actuators (AB-QM DN 10-100) 1)

Valvetype Stroke(mm) TWA-Z 3) AMI 140 ABNM AMV 110/120 NL

AME 110/120 NL AME 435 QM

Recommendedorderingcodenumbers(fordetailsrefertodatasheetsfortheseactuators)

082F1266NC,230V

082H8048 AMI140 24V,12s/mm, 2-pointcontrol

082F1191Thermalact.LOG24V(0-10V)

082F1193Thermalact.LIN24V(0-10V)

082H8056AMV110NL24V,24s/mm,3-pointcontrol

082H8057AME110NL24V,24s/mm,0-10V

082H0171AME435QM24V

DN10-20 2.25 ü ü ü ü -

DN25,32 4.50 ü 2) ü ü 4) ü -

DN40,50 10 - - - - ü

DN65-100 15 - - - - ü

1) Minimum recommended AB-QM setting is 20 %2) up to 60 % of Qmax3) Please be aware that only this type of TWA actuator is to be used with AB-QM4) up to 90% od Qmax

Additional actuator’s functionality available, for more info please contact your local Danfoss organization.

Closing point (measure) for DN 10-32

10.4

±0.

3



Technical data

AB-QM (thread version)

Nominal diameter DN 10 Low Flow 10 15

Low Flow 15 20 25 32 40 50

Flowrange

Qmin(20%)3)

l/h

30 55 55 90 180 340 640 1.500 -

Qmin(40%)3) - - - - - - - - 5.000

Qmax(100%) 150 275 275 450 900 1.700 3.200 7.500 12.500

Diff.pressure1) kPa 16-400 20-400 30-400

Pressurestage PN 16

Controlrange Acc.tostandardIEC534controlrangeishighasCvcharacteristicislinear(1:3000)

Controlvalve’scharacteristic Linear(couldbeconvertedbyactuatortoequalpercentage)

Leakageacc.tostandardIEC534 Novisibleleakage(at100N) max.0.05%ofQmax at500N

Forshutofffunction Acc.toISO5208classA-novisibleleakage

FlowmediumWaterandwatermixtureforclosedheatingandcoolingsystemsaccordingtoplanttypeIforDINEN14868.

WhenusedinplantTypeIIforDINEN14868appropriateprotectivemeasuresaretaken. TherequirementsofVDI2035,part1+2areobserved.

Mediumtemperature °C −10...+120

Stroke mm 2.25 4.5 10

Connectionext.thread(ISO228/1) G ½ A G ½ A G ¾ A G ¾ A G 1 A G 1¼ A G 1½ A G 2 A G 2½ A

actuator M30×1.5 Danfossstandard

Materials in the water

Valvebodies Brass(CuZn40Pb2-CW617N) GreyironEN-GJL-250(GG25)

MembranesandO-rings EPDM

Springs W.Nr.1.4568,W.Nr.1.4310

Cone(Pc) W.Nr.1.4305CuZn40Pb3-CW614N,

W.Nr.1.4305

Seat(Pc) EPDM W.Nr.1.4305

Cone(Cv) CuZn40Pb3-CW614N

Seat(Cv) CuZn40Pb2-CW617N W.Nr.1.4305

Screw StainlessSteel(A2)

Flatgasket NBR

Sealingagent(onlyforvalveswithtestplugs) DimethacrylateEster

Materials out of the water

Plasticparts PA POM

Insertpartsandouterscrews CuZn39Pb3-CW614N;W.Nr.1.4310;W.Nr.1.4401 -1) Δp = (P1–P3) min~max2) according suitability and usage especially in not oxygen tight systems please mind the instructions given by the coolant producer3) Flow limitations below Qmin is possible. Regardless of the flow limitations valve can modulate till 0 % of the settings.Pc - pressure controller partCv - Control valve part

Ordering (continuous) Combinations AB-QM with electrical actuators (AB-QM, DN 125-250)

Valvetype Stroke(mm)

AME 55 QM AME 85 QM

Recommendedorderingcodenumbers(fordetailsrefertodatasheetsfortheseactuators)

082H307824V,8s/mm,0-10V

082G1453 24V,8s/mm,0-10V

DN 125 25 ü -

DN 150 25 ü -

DN 200 27 - ü

DN 250 27 - ü

Operational pressure for all AB-QM valves is 4 bar. Closing pressure for all actuators is 6 bar.Additional actuator’s functionality available, for more info please contact your local Danfoss organization.



Technical data (continuous) AB-QM(flangeversion)

Nominal diameter DN 50 65 80 100

FlowrangeQmin(40%)

2)

l/h5.000 8.000 11.200 15.200

Qmax(100%) 12.500 20.000 28.000 38.000

Diff.pressure1) kPa 30-400

Pressurestage PN 16

Controlrange Acc.tostandardIEC534controlrangeishighasCvcharacteristicislinear.(1:3000)


Leakageacc.tostandardIEC534 max.0.05%ofQmaxat500N

Forshutofffunction Acc.toISO5208classA-novisibleleakage

Flowmedium

WaterandwatermixtureforclosedheatingandcoolingsystemsaccordingtoplanttypeIforDINEN14868.

WhenusedinplantTypeIIforDINEN14868appropriateprotectivemeasuresaretaken.TherequirementsofVDI2035,part1+2areobserved.


Stroke mm 10 15

Connectionflange PN 16

actuator Danfossstandard


Valvebodies GreyironEN-GJL-250(GG25)

Membranes/Bellow EPDM

O-rings EPDM

Springs W.Nr.1.4568,W.Nr.1.4310

Cone(Pc) CuZn40Pb3-CW614N,W.Nr.1.4305

Seat(Pc) W.Nr.1.4305

Cone(Cv) CuZn40Pb3-CW614N

Seat(Cv) W.Nr.1.4305

Screw StainlessSteel(A2)

Flatgasket NBR

Nominal diameter DN 125 125 HF 150 150 HF 200 200 HF 250 250 HF

FlowrangeQmin(40%)

2)

l/h36.000 48.000 58.000 91.600 76.000 120.000 112.000 176.800

Qmax(100%) 90.000 120.000 145.000 229.000 190.000 300.000 280.000 442.000

Diff.pressure1) kPa 30-400(60-400forHFversion)

Pressurestage PN 16

Controlrange Acc.tostandardIEC534controlrangeishighasCvcharacteristicislinear.


Leakageacc.tostandardIEC534 max.0.01%ofQmaxat650N

max.0.01%ofQmax at1000N

Flowmedium

WaterandwatermixtureforclosedheatingandcoolingsystemsaccordingtoplanttypeIforDINEN14868.

WhenusedinplantTypeIIforDINEN14868appropriateprotectivemeasuresaretaken.TherequirementsofVDI2035,part1+2areobserved.


Stroke mm 25 25 27 27

Connectionflange PN 16

actuator Danfossstandard


Valvebodies GreyironEN-GJL-250(GG25)

Membranes/Bellow W.Nr.1.4571 EPDM

O-rings EPDM

Springs W.Nr.1.4401 W.Nr.1.4310

Cone(Pc) W.Nr.1.4404NC W.Nr.1.4021

Seat(Pc) W.Nr.1.4027

Cone(Cv) W.Nr.1.4404NC W.Nr.1.4021

Seat(Cv) W.Nr.1.4027

Screw W.Nr.1.1181

Flatgasket Graphitegasket Nonasbestos

1) Δp = (P1–P3) min~max 2) Flow limitations below Qmin is

possible. Regardless of the flow limitations valve can modulate till 0% of the settings.

3) according suitability and usage especially in not oxygen tight systems please mind the instructions given by the coolant producer

Pc - pressure controller partCv - Control valve part


1

5

6

7

8

2

3

4

1

2

3

45

6

7

8


Design

1 Spindle 2 Stuffingbox 3 Pointer 4 Controlvalve’scone 5 Membrane 6 Mainspring 7 Hollowcone(pressure

controller) 8 Vulcanizedseat(pressure

controller)

1. Differential pressure controller DPC Thedifferentialpressurecontrollermaintainsaconstantdifferentialpressureacrossthecontrolvalve.Thepressuredifference ΔpCv(P2-P3)onthemembraneisbalancedwiththeforceofthespring.Wheneverthedifferentialpressureacrossthecontrolvalvechanges(duetoachangeinavailablepressure,ormovementofthecontrolvalve)thehollowconeisdisplacedtoanewpositionwhichbringsanewequilibriumandthereforekeepsthedifferentialpressureataconstantlevel.

2. Control valve Cv Thecontrolvalvehasalinearcharacteristic.ItfeaturesastrokelimitationfunctionthatallowsadjustmentoftheKvvalue.Thepercentagemarkedonthescaleequalsthepercentageof100%flowmarkedonthepointer.Changingthestrokelimitationisdonebyliftingtheblockingmechanismandturningthetopofthevalvetothedesiredposition,showedonthescaleasapercentage.Ablockingmechanismautomaticallypreventsunwantedchangingofthesetting.

Function:TheAB-QMvalveconsistsoftwoparts:1. Differentialpressure

controller2. Controlvalve

P1P3P2

P2-P3

P1-P3Δp = (P1-P3)ΔpCv = (P2-P3)

AB-QM DN 10-32


P1 P3


AB-QM DN 40, 50

AB-QM DN 50-100

Design (continuous)

1. Shutoffscrew 2. Mainspring 3. Membrane 4. DPcone 5. Seat 6. Valvebody 7. Controlvalvescone 8. Lockingscrew 9. Scale 10. Stuffingbox 11. Spindle

AB-QM DN 150

P1 P3

1. Valvebody 2. Valveseat 3. DPCcone 4. CVcone 5. Controllercasting 6. Rollingdiaphragm 7. Adjustingscrew 8. Bellowforpressurereliefon

DPCcone

AB-QM DN 125

P3P1


P3P1


Design (continuous)

1. Valvebody 2. Valveseat 3. DPCcone 4. CVcone 5. Controllercasting 6. Rollingdiaphragm 7. Adjustingscrew 8. Bellowforpressurereliefon

DPCcone

AB-QM DN 200, 250



Thread version Flange version

Sizing



Sizing (continuous)

Example 1: Variable flow system

Given: Coolrequirementperunit:1000WFlowtemperatureinthesystem:6°CReturntemperatureinthesystem:12°C

Required-control and balancing valves: AB-QMandactuatorstypeforBMSsystem.Solution: Flowinthesystem:Q(l/h)Q=0.86×1000/(12−6)=143l/h

Selected: AB-QMDN10mmwithQmax=275l/hpresettingon143/275=0.52=52%ofmaximumopening.Actuators:AMV110NL-24VRemarks: requiredminimumdifferentialpressureacrosstheAB-QMDN10:16kPa.

Example 2: Constant flow system

Given: Coolrequirementperunit:4000WFlowtemperatureinthesystem:6°CReturntemperatureinthesystem:12°C

Required-automatic flow limiter: AB-QMandpresetting.

Solution: Flowinthesystem:Q(l/h)Q=0.86×4000/(12−6)=573l/h

Selected: AB-QMDN20mmwithQmax=900l/hpresettingon573/900=0.64=64%ofmaximumopening.

Remarks: requiredminimumdifferentialpressureacrosstheAB-QMDN20:16kPa.

Example 3: Sizing AB-QM according pipe dimension

Given: Flowinsystem1.4m3/h(1400l/h=0.38l/s),pipedimensionDN25mm

Required-automatic flow limiter: AB-QMandpresetting.

Solution: InthiscasewecanselectedAB-QMDN25mmwithQmax=1700l/h

Inthiscaseitwillberecommendedtocheckthemaximumvelocityinthepipe.Forthiswecalculatevelocityinthepipeforcondition: DN25mm–Di27.2mm

Dimensionandconditionacceptable,veloscitybelow1.0m/s.

PresetingonthevalveAB-QMDN25mm1400/1700=0.82=82%ofmaximumopening.Remarks: requiredminimumdifferentialpressureacrosstheAB-QMDN25:20kPa.


Q

P2-P3

P2-P3

Blue

Red

P2-P3

Q=const. Q=const.

Pump optimization

Q

16kP a 400kPa

P1-P3

P1-P3

P1 P2 P3

(20kPa)

P1P3P2

P2-P3

P1-P3

DN40-100 DN10-32

Qnom=const


Pump optimising / Trouble shooting

* Δpmin = (P1-P3)min

** Δpcv.min = (P2-P3)min

Qnom=const

DN125-250

* Δpmin = (P1–P3)min

TheAB-QM(DN10-32)featurestestplugsthatallowmeasuringofthepressuredifferenceΔpcv(P2-P3)acrossthecontrolvalvewhileAB-QM(DN40-250)measuringisdonebetweenP1toP3.Ifthepressuredifferenceexceedstheminimalrequiredpressureisoperationalandtheflowlimitationisachieved.Themeasuringfunctioncanbeusedtoverifyifenoughpressuredifferenceisavailableandthusverifytheflow.

Itcanalsobeusedtooptimizethepumphead.Thepumpheadcanbedecreaseduntilnomorethantheminimalrequiredpressureisavailableonthemostcriticalvalve(intermsofhydronic).Thisoptimalpointistobefoundwhenproportionalitybetweenpumpheadandmeasureddifferentialpressureceasetoexist.VerifyingthepressurecanbedonebyusingforexampleDanfossPFMdevice(formoredetailspleaserefertoAB-QMTechNote).


10%100%

① ② ④

≠h h+2mm,DN10-20

h+4mm,DN25-32

③


PresettingDN10-32

Thecalculatedflowcanbeadjustedeasilywithoutusingspecialtools.

Tochangethepresetting(factorysettingis100%)followthefourstepsbelow:

① Removetheblueprotectivecaporthemountedactuator

② Raisethegreypointer③ Turn(clockwisetodecrease)tothenew

presetting④ Pressgreypointerbackintolockposition.

Afterclickpresettingislocked.

Thepresettingscaleindicatesvaluesfrom100%flowto0%.Clockwiseturningwoulddecreasetheflowvaluewhilecounterclockwisewouldincreaseit.

IfthevalveisaDN15thenthemaxflow=450l/h=100%presetting.Tosetaflowof270l/hyouhavetoset:270/450=60%.

Danfossrecomendsapresetting/flowfrom20%to100%.Factorypresettingis100%.


Note: DN 125 & 150: 1 turn = 6.0 %DN 200 & 250: 1 turn = 5.5 %

Note: 1 turn = 10%


Service DN 10-32Fortheserviceshutofffunction,itisrecommendedtoinstallthevalveinthesupplywaterpipe.

Valvesareequippedwithplasticshut-offmechanismthatistobeusedforisolatingfunctionupto1bardifferentialpressure.Whenclosingagainsthigherdifferentialpressurepleaseuseaccessory-shut-off&protectionpiece(003Z1230)orsetthevalueto0%.

Installing AB-QMvalveismono-directionalmeaningthatthevalveoperateswhenarrowonthevalvebodyisalignedwithflowdirection.Whenthisruleisdisobeyedthevalveactslikevariableorificethatcausewaterhammeratsuddenclosingwhenavailablepressurehasincreasedorvalvehavebeensettolowervalue.

Incasewhensystemconditionallowsbackflowsitisstronglyrecommendedtousebackflowpreventerinordertoavoidpossiblewaterhammerthatcandamagethevalveaswellasotherelementsinthesystem.

DN 40-100 (125- 250)Fortheserviceshutofffunction,thevalvecanbeinstalledineithersupplyorreturnpipe. Valvesareequippedwithmanualshut-offforisolatingfunctionupto16bar.

+

–

Presetting (continuous)

DN125-250

DN40-100

Setting 60%

+

–

Max 25Nm



1.Thepressureindependentbalancingandcontrolvalveshouldbecomprisedofalinearcontrolvalveandanintegratedmembranebasedpressurecontroller.

2.ThepressureindependentbalancingandcontrolvalveshouldbeavailableintherangefromDN10-250.

3.Thevalvecouldbeusedasanautomaticflowlimiter.4.Thevalveshouldhaveamechanismtoadjusttheflowsteplessfrom100to0%ofthemaximum

flow.5.Minimumpossibleflowincombinationwithamodulatingactuatorshouldbe30l/h.6.Attheminimumsettingof30l/hmodulationto0%oftheflowshouldbepossible.7.Shutoffservicefunctionshouldbepossiblewithsettingmechanism.8.TheadjustmentshouldbeperformedwithoutatoolfordimensionsuptoDN32orastandardtool

forvalvesbiggerthanDN32.9.Thesetting,whichcanbelocked,shouldbevisiblefromthetopforvalvesDN32andfromtheside

forDN40-250.10.ThecontrolvalvestuffingboxshouldbeserviceableunderpressureforvalvesuptoDN32.11.Thevalvesshouldhaveashut-offfunction(positive),separatedfromthesettingmechanism,for

valvesDN40-250.12.Theleakagerateshouldbe:Novisibleleakageatforceofthethermalactuator(90N)forvalves

uptoDN32andforvalvesuptoDN1000.05%ofthekvat500N.Allactuatorsshouldbeabletocloseagainst600kPadifferentialpressure.

13.Theauthorityofthepressureindependentcontrolvalveshouldbe1atallsettings(controlvalvecharacteristicisnotchanged).

14.Controlvalveshouldhaveflow–controlsignalasalinearcharacteristicatallsettings.Controlratioofthepressureindependentbalancingandcontrolvalveshouldbehigherthan1:300(Supplier of the valve should provide lab test results 1)).

15.Controlvalveshouldhavethepossibilitytochangelinearcharacteristictoequalpercentagecharacteristicatallsizesandsettingsbyadjustingactuatorsettings.

16.Minimumstartingdifferentialpressureforflowlimitationshouldbe16kPaforvalvesuptoDN20,20kPavalvesuptoDN32.(Supplier of the valve should provide lab test results 1)).Nominalpressurerating16bar(PN20onrequest),maximaltestpressure25bar.

17.TestplugforpumpoptimizationandflowverificationshouldbeavailableforDN10-250.

Nominaldiameter: ________Connection: ________ Adjustmentrangefrom-to ________ m3/hProducedby: DanfossType: AB-QMOrderingno.: 003Z ____

1) Since there is no standard for testing procedure, Danfoss recommends verification by independent lab to compare control and flow limitation function of different PIBCVs at the same basis.

Tender text



TypeL1 L2 L3 L4 L5 L6 H1 H2 H3 H4 H5 b Valveweight

mm ISO 228/1 (kg)

DN 10 53 36 79 92 104 109 73 20 100 104 138 G ½ 0.38

DN 15 65 45 79 98 110 116 75 25 102 108 141 G ¾ 0.48

DN 20 82 56 79 107 120 125 77 33 105 112 143 G 1 0.65

DN 25 104 71 79 124 142 142 88 42 117 124 155 G 1 ¼ 1.45

DN 32 130 90 79 142 154 160 102 50 128 136 166 G 1 ½ 2.21

Dimensions

TypeL1 H1 H2 H3 b Weight

mm ISO 228/1 kg

DN40 110 170 174 280 G 2 6.9

DN 50 130 170 174 280 G 2 ½ 7.8

AB-QM DN 40, 50

H1

L2

b

H2

AME 435 QM + AB-QM

H3

TWA-Z + AB-QM

H3

L4

AMV (E) 110 NL + AB-QMAMI 140 + AB-QM

H5

L6

H4

ABNM + AB-QM

L5

L2

L3

L2

H2

H1

b

L1

AB-QM DN 10-32



Dimensions (continuous)

TypeL1 H1 H2 H3 a

(EN1092-2)Weight(kg)mm

DN 50 230 170 174 280 165 14.2

DN 65 290 220 172 330 185 38.0

DN 80 310 225 177 335 200 45.0

DN 100 350 240 187 350 220 57.0

H2

L1

a

H1

AB-QM DN 50-100

H3

AME 435 QM + AB-QM




H3

AME 55 QM + AB-QM DN 125

H3

AME 55 QM + AB-QM DN 150

TypeL1 H1 H2 H3 a Weight

mm (EN1092-2) (kg)

DN 125 400 272 518 507 250 85.3

DN 150 480 308 465 518 285 138

L1

H2

H1

aAB-QM DN 125 AB-QM DN 150

H2

H1

L1

a

20 VD.C6.Q5.02 ProducedbyDanfossA/S©11/2011


H3

AME 85 QM + AB-QM DN 200, 250

a

L1

H2

H1

AB-QM DN 200, 250

TypeL1 H1 H2 H3 a Weight

mm (EN1092-2) (kg)

DN 200 600 434 483 618 340 219

DN 250 730 430 533 708 405 342


Data sheet Pressure independent balancing and control …€¦ · · 2016-04-18Data sheet...

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Transcript of Data sheet Pressure independent balancing and control …€¦ · · 2016-04-18Data sheet...