Kitz F Series - Supply of Air Operation Pressure ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・７

Document No.：KE-4010-11                                            Page: 7/58

10.  SupplyofAirOperationPressure

10.1 For the actuator factory-assembled with a solenoid valve, provide the air tubing between the air
compressorandthesolenoidvalve.  AirinletsareRc1/4.

10.2 Use copper, coated copper or plastic tubes of an adequate diameter and wall thickness.  Clean tube
borestoremoveallforeignresiduesandtightlysealallconnectionstoavoidleakageofairduringatravelfrom
thecompressor.

10.3Ifyouwanttomountyourownsolenoidvalvesotherthanthosefactory-assembled,selectthefollowing
type.  ForTypeFAactuators,4-waysolenoidvalvesareused.  ForTypeFASactuators,3-wayor4-way
solenoidvalveswithplugupjustoneportareused.

10.4AirinletsareRc1/4.  Use6mmorsmallertubes,andhexagonalfittingsof19mmandsmallerwidthofflat.
ContactKITZCorporationfortechnicaladvice,ifyouwanttouselargertubesforfasteroperationofactuators.

10.5 Keep the air always free from dust and moisture ( -15℃ or lower dew point under the atmospheric
pressure),usingair-filtersandair-dryers.

10.6Choosethecapacitiesofyourownaccessoriesandthesizesofauxiliaryairtubing,inconsiderationof
possiblelossofairpressureduringatravelfromthecompressor.  

10.7Theexactvolume(Q)ofairsupplyrequiredperminuteforactuatorsmustbeknownbeforetheairtubing
installationsothattheprovidedoperationpressuremaybesufficienttoproperlydriveactuatorsandvalves. 
Calculateyourairsupplyrequirementwiththefollowingequation.

10.8Therequiredairpressuremustbekeptconstantattheairinletofanactuator.  Insufficientairsupply
causesintermittentpistondriveandresultsinmalfunctionofactuators.

  Q=V(P+0.1013)/0.1013  x  60/t  [
L/min.(ANR)]

V:Volumeofactuatorhousing[
L]  (V1orV2inSection10)
P:Airoperationpressure[MPaG]
t:
Timerequiredperstroke[second]under0.4MPaoperationpressure,whereno
valvenoraccessoryisprovided. (RefertoTable1)
     ANR:  Airsupplyvolumeunderthestandardconditionof20℃ (68°F), 
760mmHgabsolutepressureand65%relativehumidity



Designofsolenoidvalvemountingpad
(airinlet/outletports)
Actuatortype Time[sec]
FA/FAS-1
FA/FAS-2
FA/FAS-3
FA/FAS-4
FA/FAS-5
FA/FAS-6
0.2
0.3
0.4
0.6
1.0
2.0
Table1. 
Time[t]requiredperstroke
under0.4MPaoperation