Kitz B Series - Page 11

DocumentNo.:KE-4025-06                                           8/50
6.3AirSupplyRequirement(FlowRate)
Actuatorsshouldbesuppliedwithairsufficienttooperatethevalvethroughonefullstrokefromtheopento
closedpositionorviceversaintseconds,asconvertedintoflowratesperminute.
TherequiredairvolumeQisexpressedwiththefollowingequation.
Q=V((P+0.1013)/0.1013)×
60
t
 (Nl/min.)
where
Q=Airvolumerequirementperminute(Nl/min.) 
V=CylinderVolume(liters)
V1orV2,whicheverlarger,fordouble-actionactuators
P=Supplypressure(MPaingauge)
t =Timerequiredperstroke(seconds)

6.4AirConsumption
Airconsumptionmeansthevolumeofairdischargedintotheatmospherefromanactuatoroperatingntimes
forwardandbackwardperhourasconvertedintovolumesperminute.Thevalveiscalculatedwiththefollowing
equation,
TypeBactuator[Doubleactiontype]
Q=(V1+V2)((P+0.1013)/0.1013)n×
1
60
 (Nl/min.)
TypeBSorBSWactuator[Springreturntype]
Q=V((P+0.1013)/0.1013)n×
1
60
 (Nl/min.)



 Use clear, dry air filtered to remove dusts and moisture which will
deterioratethehousinginteriorandcausemalfunctionoftheactuator.
 Ensure to correctly calculate the required amount of air in advance and
preparecompressorsandreservoirswithsufficientcapacity.
 Selectsolenoidvalves,airfilter-regulatorsandairsupplytubeswhichhave
asufficientcapacitytoaccommodatetheairflowratecalculatedinadvance.
 Todeterminethepracticalcapacityofacompressororairtank,additionof
extra 30% to the calculated air consumption volume is recommended
consideringapossibleairlosscausedbyconnectingtotheaccessoriesand
tubes.Insufficientairsupplywillcauseapulsystrokeandmalfunction.

Nl:Volumeofstandardair
Conditionofstandardair
Airtemperature:20℃
Absolutepressure:760mmHg
Relativehumidity:65%
