1VD.C6.Q6.02 © Danfoss 04/2013SMT/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 performanceoftheAB-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.Q6.02 © Danfoss 04/2013 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
LINsettingstaysconstantatanyavailablepressu
re
LOGsetting
staysc
onstantat
anyavailable
pressure
0 10V0
100%
Fora
nygiven
100
%setting
Control performance TheAB-QMhasalinearcontrolcharacteristic.TheAB-QMispressureindependentwhichmeansthatthecontrolcharacteristicisindependentfromtheavailablepressureandisnotinfluencedbyalowauthority.TheflowlimitationontheAB-QMisachievedbylimitingthestrokeandtheDanfossactuatorscalibratetothestrokeofthevalves.ThismeansthattheAB-QMkeepsitslinearcharacteristicindependentofthesettingordifferentialpressure.
BecauseofthepredictablecharacteristictheactuatorsontheAB-QMcanbeusedtochangetheresponsefromlineartologarithmic(equalpercentage).ThatmakestheAB-QMsuitableforallapplications,includingAHUs,wheretheequalpercentagecharacteristicisneededtogetastablecontrolloop.Theactuatorscanbeswitchedfromlineartologarithmicbychangingadipswitchsettingontheactuator.
3VD.C6.Q6.02 © Danfoss 04/2013SMT/SI
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
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.
4 VD.C6.Q6.02 © Danfoss 04/2013 SMT/SI
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
Ordering AB-QM threadedversion(withtestplugsandwithouttestplugs)
Picture DN Qnom.
(l/h)Ext. thread(ISO228/1)
Code No. AB-QM Ext. thread(ISO228/1)
Code No.
10LF 150G½A
003Z1261G½A
003Z1251
10 275 003Z1211 003Z1201
15LF 275G¾A
003Z1262G¾A
003Z1252
15 450 003Z1212 003Z1202
20 900 G1A 003Z1213 G1A 003Z1203
25 1.700 G1¼A 003Z1214 G1¼A 003Z1204
32 3.200 G1½A 003Z1215 G1½A 003Z1205
40 7.500 G2A 003Z0760 AB-QM (DN 10-32) can not be upgraded to AB-QM with test plugs!50 12.500 G2½A 003Z0761
AB-QMflangedversion
Picture DN Qnom.
(l/h)Flange
connection Code No.
50 12.500
PN16
003Z0762
65 20.000 003Z0763
80 28.000 003Z0764
100 38.000 003Z0765
125 90.000 003Z0705
125HF 110.000 003Z0715
150 145.000 003Z0706
150HF 190.000 003Z0716
200 190.000 003Z0707
200HF 250.000 003Z0717
250 280.000 003Z0708
250HF 370.000 003Z0718
Set-pack (oneMSV-SandoneAB-QMwithouttestplugs)
Picture DN Qnom. (l/h)
Ext. thread (ISO228/1) Code No.
15LF 275G¾A
003Z1238
15 450 003Z1242
20 900 G1A 003Z1243
25 1.700 G1¼A 003Z1244
32 3.200 G1½A 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.
5VD.C6.Q6.02 © Danfoss 04/2013SMT/SI
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
Accessories & spare parts
TypeComments
Code No.To pipe To valve
Unionconnection(1pcs.)
R3/8 DN10 003Z0231
R1/2 DN15 003Z0232
R3/4 DN20 003Z0233
R1 DN25 003Z0234
R11/4 DN32 003Z0235
R11/2 DN40 003Z0279
R2 DN50 003Z0278
Tailpiecewelding(1pcs.)
Weld.
DN15 003Z0226
DN20 003Z0227
DN25 003Z0228
DN32 003Z0229
DN40 003Z0270
DN50 003Z0276
Tailpiecesforsoldering(2nuts,2gaskets,2solderingnipples
12x1mm DN10 065Z7016
15x1mm DN15 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 NLAME 110/120 NL AME 435 QM
Recommendedorderingcodenumbers(fordetailsrefertodatasheetsfortheseactuators)
082F1266NC,230V
082H8048 AMI14024V,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 ü2) ü ü4) ü -
DN40,50 10 - - - - ü
DN65-100 15 - - - - ü
1) Minimum recommended AB-QM setting is 20 %2) up to 60 % of Qnom3) Please be aware that only this type of TWA actuator is to be used with AB-QM4) up to 90% od Qnom
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
6 VD.C6.Q6.02 © Danfoss 04/2013 SMT/SI
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
Technical data
Nominal diameter DN 10 Low Flow 10 15
Low Flow 15 20 25 32 40 50
Flowrange
Qnom(100%)1)
l/h
150 300 300 450 900 1.700 3.200 7.500 12.500
Qhigh4) 180 360 360 540 1080 1.870
5)3.520
5)7.500 12.500
Settingrange2) % 20-120 20-110 40-100
Diff.pressure3),4)∆pQnom
(∆pQhigh)kPa
16-400(18-400)
20-400(23-400)
20-400(25-400)
30-400
Pressurestage PN 16
Controlrange Acc.tostandardIEC534controlrangeishighasCvcharacteristicislinear(1:1000)
Controlvalve’scharacteristic Linear(couldbeconvertedbyactuatortoequalpercentage)
Leakageacc.tostandardIEC534 Novisibleleakage(at100N)max.0.05%of
Qnomat500N
Forshutofffunction Acc.toISO5208classA-novisibleleakage
Flowmedium
WaterandwatermixtureforclosedheatingandcoolingsystemsaccordingtoplanttypeIforDINEN14868.
WhenusedinplantTypeIIforDINEN14868appropriateprotectivemeasuresaretaken.
TherequirementsofVDI2035,part1+2areobserved.
Mediumtemperature °C −10...+120
Stroke mm 2.25 4.5 10
Connection
ext.thread(ISO228/1)
G½A G½A G¾A G¾A G1A G1¼A
G1½A
G2A G2½A
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 -
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
DN125 30 ü -
DN150 30 ü -
DN200 27 - ü
DN250 27 - ü
Operational pressure for all AB-QM valves is 4 bar. Closing pressure for all actuators is 16 bar.Additional actuator’s functionality available, for more info please contact your local Danfoss organization.
AB-QM(thread version)
1) factory setting of the valve is done at nominal setting range.
2) Regardless of the setting, the valve can modulate below 1% of set flow.
3) Δp = (P1–P3) min~max4) When set above 100%, minimum
starting pressure needed is higher, see figures in the ().
5) When set above 100%, it can be used as a flow limiter only.
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
7SMT/SI VD.C6.Q6.02©Danfoss04/2013
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
Technical data (continuous) AB-QM(flangeversion)Nominal diameter DN 50 65 80 100
FlowrangeQnom(100%)
1)
l/h12.500 20.000 28.000 38.000
Qhigh4) 12.500 20.000 28.000 38.000
Settingrange2) % 40-100
Diff.pressure3),4) ∆pQnom
(∆pQhigh)kPa
30-400(30-400)
Pressurestage PN 16
Controlrange Acc.tostandardIEC534controlrangeishighasCvcharacteristicislinear.(1:1000)
Controlvalve’scharacteristic Linear(couldbeconvertedbyactuatortoequalpercentage)
Leakageacc.tostandardIEC534 max.0.05%ofQnomat500N
Forshutofffunction Acc.toISO5208classA-novisibleleakage
Flowmedium
WaterandwatermixtureforclosedheatingandcoolingsystemsaccordingtoplanttypeIforDINEN14868.
WhenusedinplantTypeIIforDINEN14868appropriateprotectivemeasuresaretaken.TherequirementsofVDI2035,part1+2areobserved.
Mediumtemperature °C −10...+120
Stroke mm 10 15
Connectionflange PN16
actuator Danfossstandard
Materials in the water
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
FlowrangeQnom(100%)1)
l/h90.000 110.000 145.000 190.000 190.000 250.000 280.000 370.000
Qhigh4) 100.000 120.000 160.000 229.000 228.000 300.000 336.000 444.000
Settingrange2) % 40-110 40-120
Diff.pressure3),4)
∆pQnom
(∆pQhigh)kPa
30-400(50-400)
60-400(80-400)
30-400(50-400)
60-400(80-400)
30-400(50-400)
60-400(80-400)
30-400(50-400)
60-400(80-400)
Pressurestage PN 16
Controlrange Acc.tostandardIEC534controlrangeishighasCvcharacteristicislinear.
Controlvalve’scharacteristic Linear(couldbeconvertedbyactuatortoequalpercentage)
Leakageacc.tostandardIEC534max.0.01%ofQnom
at650Nmax.0.01%ofQnomat1000N
Flowmedium
WaterandwatermixtureforclosedheatingandcoolingsystemsaccordingtoplanttypeIforDINEN14868.
WhenusedinplantTypeIIforDINEN14868appropriateprotectivemeasuresaretaken.TherequirementsofVDI2035,part1+2areobserved.
Mediumtemperature °C −10...+120
Stroke mm 30 30 27 27
Connectionflange PN16
actuator Danfossstandard
Materials in the water
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) factory setting of the valve is done at nominal setting range.
2) Regardless of the setting, the valve can modulate below 1% of set flow.
3) Δp = (P1–P3) min~max4) When set above 100%, minimum
starting pressure needed is higher, see figures in the ().
Pc - pressure controller partCv - Control valve part
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1
5
6
7
8
2
3
4
1
2
3
45
6
7
8
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
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.ThepressuredifferenceΔpCv(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
9VD.C6.Q6.02 © Danfoss 04/2013SMT/SI
P1 P3
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
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. Scale10. Stuffingbox11. 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
10 VD.C6.Q6.02 © Danfoss 04/2013 SMT/SI
P3P1
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
Design (continuous)
1. Valvebody 2. Valveseat 3. DPCcone 4. CVcone 5. Controllercasting 6. Rollingdiaphragm 7. Adjustingscrew 8. Bellowforpressurereliefon
DPCcone
AB-QM DN 200, 250
11VD.C6.Q6.02 © Danfoss 04/2013SMT/SI
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
Thread version Flange version
Sizing
12 VD.C6.Q6.02 © Danfoss 04/2013 SMT/SI
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
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-QMDN10mmwithQnom=275l/hpresettingon143/275=0.52=52%ofnominalopening.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-QMDN20mmwithQnom=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-QMDN25mmwithQnom=1700l/h
Inthiscaseitwillberecommendedtocheckthemaximumvelocityinthepipe.Forthiswecalculatevelocityinthepipeforcondition:DN25mm–Di27.2mm
Dimensionandconditionacceptable,veloscitybelow1.0m/s.
PresetingonthevalveAB-QMDN25mm1400/1700=0.82=82%ofnominalopening.Remarks:requiredminimumdifferentialpressureacrosstheAB-QMDN25:20kPa.
13VD.C6.Q6.02 © Danfoss 04/2013SMT/SI
Q
P2-P3
P2-P3
Blue
Red
P2-P3
Q=const. Q=const.
Pumpoptimization
Q
16kP a 400kPa
P1-P3
P1-P3
P1 P2 P3
(20kPa)
P1P3P2
P2-P3
P1-P3
DN40-100 DN10-32
Qnom=const
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
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).
14 VD.C6.Q6.02 © Danfoss 04/2013 SMT/SI
10%100%
① ② ④
≠h h+2mm,DN10-20
h+4mm,DN25-32
③
>100%
h
Scale+90%
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
PresettingDN10-32
Thecalculatedflowcanbeadjustedeasilywithoutusingspecialtools.
Tochangethepresetting(factorysettingis100%)followthefourstepsbelow:
① Removetheblueprotectivecaporthemountedactuator
② Raisethegreypointer③ Turn(clockwisetodecrease)tothenew
presetting④ Pressgreypointerbackintolockposition.
Afterclickpresettingislocked.
Thepresettingscaleindicatesvaluesfrom100%flowto0%.Clockwiseturningwoulddecreasetheflowvaluewhilecounterclockwisewouldincreaseit.
IfthevalveisaDN15thenthenomflow=450l/h=100%presetting.Tosetaflowof270l/hyouhavetoset:270/450=60%.
Danfossrecomendsapresetting/flowfrom20%to100%.Factorypresettingis100%.
15VD.C6.Q6.02 © Danfoss 04/2013SMT/SI
Note: DN 125 & 150: 1 turn = 5.0 %DN 200 & 250: 1 turn = 5.5 %
Note: 1 turn = 10%
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
Service DN 10-32Fortheserviceshutofffunction,itisrecommendedtoinstallthevalveinthesupplywaterpipe.
Valvesareequippedwithplasticshut-offmechanismthatistobeusedforisolatingfunctionupto1bardifferentialpressure.Whenclosingagainsthigherdifferentialpressurepleaseuseaccessory-shut-off&protectionpiece(003Z1230)orsetthevalueto0%.
Installing AB-QMvalveismono-directionalmeaningthatthevalveoperateswhenarrowonthevalvebodyisalignedwithflowdirection.Whenthisruleisdisobeyedthevalveactslikevariableorificethatcausewaterhammeratsuddenclosingwhenavailablepressurehasincreasedorvalvehavebeensettolowervalue.
Incasewhensystemconditionallowsbackflowsitisstronglyrecommendedtousebackflowpreventerinordertoavoidpossiblewaterhammerthatcandamagethevalveaswellasotherelementsinthesystem.
DN 40-100Fortheserviceshutofffunction,thevalvecanbeinstalledineithersupplyorreturnpipe.Valvesareequippedwithmanualshut-offforisolatingfunctionupto16bar.
+
–
Presetting (continuous)
DN125-250
DN40-100
Setting 60%
+
–
Max 25Nm
16 VD.C6.Q6.02 © Danfoss 04/2013 SMT/SI
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
1.Thepressureindependentbalancingandcontrolvalveshouldbecomprisedofalinearcontrolvalveandanintegratedmembranebasedpressurecontroller.
2.ThepressureindependentbalancingandcontrolvalveshouldbeavailableintherangefromDN10-250.
3.Thevalvecouldbeusedasanautomaticflowlimiter.4.Thevalveshouldhaveamechanism(flowsetting)toadjusttheflowsteplessfrom100to0%ofthe
nominalflow.5.Minimumpossibleflowpre-settingshouldbe30l/h.6.Attheminimumsettingmodulationbelow1%shouldbepossible.7.Shutoffservicefunctionshouldbepossiblewithsettingmechanism.8.TheadjustmentshouldbeperformedwithoutatoolfordimensionsuptoDN32orastandardtool
forvalvesbiggerthanDN32.9.Thesetting,whichcanbelocked,shouldbevisiblefromthetopforvalvesDN32andfromtheside
forDN100.10.andre-numbertherest.11.Thevalvesshouldhaveashut-offfunction,separatedfromthesettingmechanism,forvalvesDN40-250.12.Theleakagerateshouldbe:Novisibleleakageatforceofthethermalactuator(90N)forvalves
uptoDN32.Leakageof0.05%oftheQnomforvalvesuptoDN100andupDN250at500Nand1.000Nrespectively.Allactuatorsshouldbeabletocloseagainst16barofdifferentialpressure.
13.Theauthorityofthepressureindependentcontrolvalveshouldbe1atallsettings(controlvalvecharacteristicisnotchanged).
14.Controlvalveshouldhavelinearflowcharacteristicatallsettings.(Supplier of the valve should provide lab test results1)).
15.Controlratioofthepressureindependentbalancingandcontrolvalveshouldbehigherthan1:100016.Minimumstartingdifferentialpressureforflowlimitationshouldbe16kPaforvalvesuptoDN20,
20kPavalvesuptoDN32and30kPaforvalvesuptoDN250.(Supplierofthevalveshouldprovidelabtestresults1)).Nominalpressurerating16bar.
17.TestplugforpumpoptimizationandflowverificationshouldbeavailableforDN10-250.18.ValvesizesfromDN10-DN250shouldbeavailablefromonesupplier.
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
17VD.C6.Q6.02 © Danfoss 04/2013SMT/SI
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
TypeL1 L2 L3 L4 L5 L6 H1 H2 H3 H4 H5 b Valveweight
mm ISO228/1 (kg)
DN10 53 36 79 92 104 109 73 20 100 104 138 G½ 0.38
DN15 65 45 79 98 110 116 75 25 102 108 141 G¾ 0.48
DN20 82 56 79 107 120 125 77 33 105 112 143 G1 0.65
DN25 104 71 79 124 142 142 88 42 117 124 155 G1¼ 1.45
DN32 130 90 79 142 154 160 102 50 128 136 166 G1½ 2.21
Dimensions
TypeL1 H1 H2 H3 b Weight
mm ISO228/1 kg
DN40 110 170 174 280 G2 6.9
DN50 130 170 174 280 G2½ 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
18 VD.C6.Q6.02 © Danfoss 04/2013 SMT/SI
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
Dimensions (continuous)
TypeL1 H1 H2 H3 a
(EN1092-2)Weight(kg)mm
DN50 230 170 174 280 165 14.2
DN65 290 220 172 330 185 38.0
DN80 310 225 177 335 200 45.0
DN100 350 240 187 350 220 57.0
H2
L1
a
H1
AB-QM DN 50-100
H3
AME 435 QM + AB-QM
19VD.C6.Q6.02 © Danfoss 04/2013SMT/SI
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
Dimensions (continuous)
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)
DN125 400 272 518 507 250 85.3
DN150 480 308 465 518 285 138
L1
H2
H1
aAB-QM DN 125 AB-QM DN 150
H2
H1
L1
a
20 VD.C6.Q6.02 Produced by Danfoss A/S © 04/2013
Data sheet Pressure independent balancing and control valve AB-QM, DN 10-250
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)
DN200 600 434 483 618 340 219
DN250 730 430 533 708 405 342
Dimensions (continuous)
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