Pages 346 through to 355 Regulator with Backflow Function AR KPages 346 through to 355How to OrderAR 30q03rBEtyKweJIS SymbolRegulatorRegulator with Backflow FunctionMade to Order(Refer to pages 354 and 355 for details.)• With the backflow function it incorporates a mechanism to exhaust the air pressure in the outlet side reliably and quickly.Example 2)When the air supply is cut off and releasing the inlet pressure to the atmosphere, the residual pressure release of the outlet side can be en-sured for a safety purpose.Example 1)When the pressure in the rear and the front of the cylinder differs:• Option/Semi-standard: Select one each for a to g .• Option/Semi-standard symbol: When more than one specification is required, indicate in alphanumeric order. Example) AR30K-03BE-1NR++++10202530405060Body sizeDescriptionWithout backflow function With backflow functionSymbolNilKNote 1)NilBNote 3)HWith backflow functionMountingMetric thread (M5)Rc NPT GNilN FThread typeM51/81/43/81/23/41M5010203040610Port sizeaWithout mounting option With bracketWith set nut (for panel fitting)NilE G M E1 Note 4)E2 Note 4)E3 Note 4)E4 Note 4)Pressure gauge Digital pressure switchbWithout pressure gaugeSquare embedded type pressure gauge (with limit indicator)Round type pressure gauge (without limit indicator)Round type pressure gauge (with limit indicator)Round type pressure gauge (with color zone)Output: NPN output / Electrical entry: Wiring bottom entry Output: NPN output / Electrical entry: Wiring top entry Output: PNP output / Electrical entry: Wiring bottom entry Output: PNP output / Electrical entry: Wiring top entryNote 2)O p t i o n346RegulatorAR10 to AR60Regulator with Backflow Function AR20K to AR60KC o u r t e s y o f C M A /F l o d y n e /H y d r a d y n e ▪ M o t i o n C o n t r o l ▪ H y d r a u l i c ▪ P n e u m a t i c ▪ E l e c t r i c a l ▪ M e c h a n i c a l ▪ (800) 426-5480 ▪ w w w .c m a f h .c o mAR20, AR20KAR40, AR40KA knob cover is available to prevent careless operation of the knob. Refer to page 389 for details.00.50.60.40.30.20.10AR25(K )Rc 3/8Flow rate (l /min (ANR))O u t l e t p r e s s u r e (M P a )500100015000.60.50.40.30.20.100Flow rate (l /min (ANR))O u t l e t p r e s s u r e (M P a )AR40(K )Rc 1/21000200030000.60.50.40.30.20.10AR30(K )Rc 3/8Flow rate (l /min (ANR))O u t l e t p r e s s u r e (M P a )50010001500AR50(K )Rc 100.60.50.40.30.20.1Flow rate (l /min (ANR))O u t l e t p r e s s u r e (M P a )5000100000.60.50.40.30.20.10AR40(K )-06Rc 3/4Flow rate (l /min (ANR))O u t l e t p r e s s u r e (M P a )100020003000400050000.60.50.40.30.20.10AR20(K )Rc 1/4Flow rate (l /min (ANR))O u t l e t p r e s s u r e (M P a )2004006008000.60.50.40.30.20.100255075100125150AR10M5Flow rate (l /min (ANR))O u t l e t p r e s s u r e (M P a )AR60(K )Rc 100.60.50.40.30.20.1500010000Flow rate (l /min (ANR))O u t l e t p r e s s u r e (M P a )349Flow Characteristics (Representative values)Condition: Inlet pressure 0.7 MPaRegulator SeriesAR10 to AR60Regulator with Backflow Function Series AR20K to AR60KAC AF AR AL AW A G AVAF800AF900C o u r t e s y o f C M A /F l o d y n e /H y d r a d y n e ▪ M o t i o n C o n t r o l ▪ H y d r a u l i c ▪ P n e u m a t i c ▪ E l e c t r i c a l ▪ M e c h a n i c a l ▪ (800) 426-5480 ▪ w w w .c m a f h .c o m000.20.30.40.50.60.70.80.91AR10Inlet pressure (MPa)0.250.30.20.15O u t l e t p r e s s u r e (M P a )0.250.20.15000.20.30.40.50.60.70.80.91AR40(K )Inlet pressure (MPa)O u t l e t p r e s s u r e (M P a )0.250.20.15000.20.30.40.50.60.70.80.91AR20(K )Inlet pressure (MPa)O u t l e t p r e s s u r e (M P a )0.250.20.15000.20.30.40.50.60.70.80.91AR40(K )-06Inlet pressure (MPa)O u t l e t p r e s s u r e (M P a )0.250.20.15000.20.30.40.50.60.70.80.91AR25(K )Inlet pressure (MPa)O u t l e t p r e s s u r e (M P a )0.250.20.15000.20.30.40.50.60.70.80.91AR30(K )Inlet pressure (MPa)O u t l e t p r e s s u r e (M P a )0.250.20.15000.20.30.40.50.60.70.80.91AR50(K )Inlet pressure (MPa)O u t l e t p r e s s u r e (M P a )0.250.20.15000.20.30.40.50.60.70.80.91AR60(K )Inlet pressure (MPa)O u t l e t p r e s s u r e (M P a )Set pointSet point Set pointSet point Set pointSet pointSet pointSet point350Pressure Characteristics (Representative values)Conditions: Inlet pressure 0.7 MPa, Outlet pressure 0.2 MPa, Flow rate 20 l /min (ANR)Series AR10 to AR60Series AR20K to AR60KC o u r t e s y o f C M A /F l o d y n e /H y d r a d y n e ▪ M o t i o n C o n t r o l ▪ H y d r a u l i c ▪ P n e u m a t i c ▪ E l e c t r i c a l ▪ M e c h a n i c a l ▪ (800) 426-5480 ▪ w w w .c m a f h .c o mAR20K to AR60K (Regulator with Backflow Function)qt erwINOUTtqer wINOUTqt er wINOUTt erqwINOUTA-AyACSM 2O U T1I NAComponent PartsNo.Description Body BonnetMaterial Zinc die-cast Aluminum die-castPolyacetal Aluminum die-castModel AR10, AR20(K)AR25(K) to AR60(K)AR10, AR20(K) to AR40(K)-06AR50(K), AR60(K)Platinum silverBlackColor 12No.Description Valve assembly Diaphragm assembly Valve guide assembly Check valve assembly Note 2)Material Brass, HNBRPolyacetal—WeatherableNBRPart no.AR10AR20(K)AR25(K)AR30(K)AR40(K)AR50(K)AR40(K)-06AR60(K)AR10P-090S AR10P-150AS Note 1)131329—AR20P-410S AR20P-150AS AR20P-050ASAR25P-410S AR25P-150AS AR25P-050ASAR30P-410S AR30P-150AS AR30P-050ASAR40P-410S AR40P-150AS AR40P-050ASAR50P-410S AR50P-150ASAR50P-050ASAR20KP-020ASAR60P-050ASAR60P-410S 3456Replacement PartsNote 1) The AR10 is a piston type. Assembly of a piston and a seal (KSYP-13).Note 2) Check valve assembly is applicable for a regulator with backflow function (AR20K to AR60K) only.Assembly of a check valve cover, check valve body assembly and 2 screws351ConstructionAR10AR20(K), AR25(K)AR30(K), AR40(K)AR50(K), AR60(K)Regulator SeriesAR10 to AR60Regulator with Backflow Function Series AR20K to AR60KAC AF AR AL AWA G AVAF800AF900C o u r t e s y o f C M A /F l o d y n e /H y d r a d y n e ▪ M o t i o n C o n t r o l ▪ H y d r a u l i c ▪ P n e u m a t i c ▪ E l e c t r i c a l ▪ M e c h a n i c a l ▪ (800) 426-5480 ▪ w w w .c m a f h .c o mwqqwCSM 2O U T1I NAArq eINOUTwwrq eA-Aw352Working Principle (Regulator with Backflow Function)AR10AR20K to AR60KWhen the inlet pressure is higher than the regulating pressure, the check valve operates as a normal regulator (Figure 1).When the inlet pressure is shut off and exhausted, any inlet pressure applied to the valve q will be lost. The force for seating the valve q is the valve spring force w only. When the valve q is opened using the outlet force, the outlet pressure will be exhausted at the inlet side. (Figure 2)When the set pressure is 0.15 MPa or less, valve q may not open due to the valve spring w force.Figure 2Figure 1IN(Inlet pressure)OUT(Outlet pressure)IN(Inlet pressure)OUT(Outlet pressure)When the inlet pressure is higher than the regulating pressure, the check valve w closes and operates as a normal regulator (Figure 1).When the inlet pressure is shut off and released, the check valve w opens and the pressure in the diaphragm chamber q is released into the inlet side (Figure 2).This lowers the pressure in the diaphragm chamber q and the force generated by the pressure regulator spring e lifts the diaphragm. Valve r opens through the stem, and the outlet pressure is released to the inlet side (Figure 2).Figure 2 BackflowPressure indiaphragm chamberInlet pressure(IN)Pressure indiaphragm chamber Inlet pressure(IN)Figure 1 NormalIN(Inlet pressure)OUT(Outlet pressure)Series AR10 to AR60Series AR20K to AR60KC o u r t e s y o f C M A /F l o d y n e /H y d r a d y n e ▪ M o t i o n C o n t r o l ▪ H y d r a u l i c ▪ P n e u m a t i c ▪ E l e c t r i c a l ▪ M e c h a n i c a l ▪ (800) 426-5480 ▪ w w w .c m a f h .c o mIN OUTASRN TIN OUTASRTN YWZINOUTD KUMQ JVCBFDKUMJQ CB F353DimensionsAR10, AR20(K) to AR40(K)-06AR50(K), AR60(K)P2(Pressure gaugeport size)P2(Pressure gaugeport size)AR10, AR20(K) to AR30(K): Max. 3.5AR40(K): Max. 5Plate thicknessPanel fitting dimension2 x P1(Port size)Bracket (Option)Bracket (Option)2 x P1(Port size)ModelStandard specificationsOptional specificationsSquare type pressure gaugeDigitalpressure switchRound type pressure gaugeP1P2AB Note 1)CDKM5 x 0.81/8, 1/41/4, 3/81/4, 3/81/4, 3/8, 1/23/43/4, 111/161/81/81/81/41/41/41/4254053537075909558 9410111612812916917611 26.528 31 36 36 43 4612.528.527.529.534 34 43.543.5FM18 x 1M28 x 1M32 x 1.5M38 x 1.5M42 x 1.5M42 x 1.5M62 x 1.5M62 x 1.50203.53.533.33.3Note 2)J13 28.527.529.534 34 43.543.5H— 28 28 28 28 28 28 28J—29.528.530.535 35 44.544.5H— 27.8 27.8 27.8 27.8 27.8 27.8 27.8J—40394145455555Round type pressure gauge (with color zone)H—ø37.5ø37.5ø37.5ø42.5ø42.5ø42.5ø42.5J—65646674748484Hø26 ø37.5ø37.5ø37.5ø42.5ø42.5ø42.5ø42.5J2665646674748484AR10AR20(K)AR25(K)AR30(K)AR40(K)AR40(K)-06AR50(K)AR60(K)ModelMNQRS2530304150507070283434405454666630 44 44 46 54 56 65.865.84.55.4 5.46.5 8.5 8.511 116.515.4 15.4 8 10.510.513 13T4055555370709090U2 2.32.32.32.32.33.23.2V18 25 26 31 35.537 ——W18.528.532.538.542.542.5——Y—1416192121——Z—66777——AR10AR20(K)AR25(K)AR30(K)AR40(K)AR40(K)-06AR50(K)AR60(K)Optional specificationsBracket mountPanel mountNote 1) The total length of B dimension is the length when the filter regulator knob is unlocked.Note 2) For the AR20 only, the position of the pressure gauge is above the center of the piping.Digital pressure switchSquare embedded type pressure gaugeOptionRound type pressure gaugeDimensionsApplicable modelAR20(K) to AR60(K)AR10, AR20(K) to AR60(K)Round type pressure gauge (with color zone)AR20(K) to AR60(K)JHCenter of pipingJ HCenter of pipingJHCenter of pipingRegulator SeriesAR10 to AR60Regulator with Backflow Function Series AR20K to AR60KAC AF AR ALAW A G AVAF800AF900C o u r t e s y o f C M A /F l o d y n e /H y d r a d y n e ▪ M o t i o n C o n t r o l ▪ H y d r a u l i c ▪ P n e u m a t i c ▪ E l e c t r i c a l ▪ M e c h a n i c a l ▪ (800) 426-5480 ▪ w w w .c m a f h .c o mStrong materials are used in the manufacturing of air filters inten-ded for high pressure operation. Also, construction modification。