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Pilot-Operated Regulator AR425 to 935 Series (AR425-F03G-R)

Pilot-Operated Regulator AR425 to 935 Series AR425-F03G-R

SMC

SMC

[Features]·This is a relief type regulator using an internal pilot method.

(i)Caution

  • Refer to the catalog for details on product specifications.
  • Product images may be representative. Refer to the manufacturer's catalog for details.

PDF

Part Number

Configured Part Number is shown.

AR425-F03G-R

Pilot-Operated Regulator AR425 To 935 Series: Detailed Examples

AR8□5: product images

AR8□5: product images

AR6□5: product images

AR6□5: product images

AR6□5-□□BG: product images

AR6□5-□□BG: product images

AR4□5-□□BG: product images

AR4□5-□□BG: product images

Pilot-Operated Regulator AR425 To 935 Series: JIS symbol

Pilot-Operated Regulator AR425 To 935 Series: JIS symbol

Pilot-Operated Regulator AR425 To 935 Series Specifications

Standard specification

ModelAR425AR435AR625AR635AR825AR835AR925AR935
Connection port size1/4, 3/8, 1/23/4, 11 1/4, 1 1/22
Applicable fluidsAir
Proof pressure1.5 MPa
Maximum operating pressure1.0 MPa
Note 1) Set pressure range (MPa)0.05 to 0.830.02 to 0.20.05 to 0.830.02 to 0.20.05 to 0.830.02 to 0.20.05 to 0.830.02 to 0.2
Note 2) Air consumption amount (bleed port part)5 L/min (ANR) (at maximum set pressure)
Pressure gauge connection port size1/4
Ambient temperature and working fluid temperature-5 to 60°C (no freezing)
StructureInternal pilot relief type (pilot air is always bleeding)
Weight (kg)0.71.12.54.5

Note 1) Outlet pressure adjustment range: P2 is 90% of P1 or less
Note 2: Air consumption varies depending on the set pressure. Structurally, even if the handle is at the maximum setting, the pressure gap between the inlet and outlet cannot be set within 0.03 MPa.

Options / Part No.

NamePart number
Model
For AR4□5For AR6□5For AR8□5For AR9□5
BracketB24PB25P--
Pressure gauge with limit indicator Note 1) G46-10-□02 (Max. measurement: 1.0 MPa), G46-2-□02 (Max. measurement: 0.2 MPa)

Note 1) The □ in the part number for the pressure gauge (e.g. G46-10-□02) indicates the connection thread type. Insert no symbol for Rc, and use "N" for NPT.
Note 3) Do not tighten excessively when mounting a pressure gauge. Doing so may result in breakage. Use sealing tape for sealing.

Model Number Notation

Model number example

Model number example

Structural Drawings

Pilot-Operated Regulator AR425 to 935 Series: structural drawings

Pilot-Operated Regulator AR425 to 935 Series: structural drawings

When handle (10) is turned clockwise to compress the pressure adjustment spring (8), the pressure from the IN side passes through diaphragm (11), opens the pilot valve (12) and enters upper pilot chamber (13). This pressure and the force generated by the pressure adjustment spring (8) act as resistance, resulting in an equilibrium. Then, this pressure passes through the diaphragm (6) of the main valve side and stem (14), and pushes the valve (main valve) (7) open, thus guiding the pressure to the OUT side. At the same time, the pressure passes through the feedback hole (15), and enters the diaphragm chamber (16), thus establishing the OUT side pressure (outlet pressure).

Component Parts

NumberPart nameMaterialsAdditional notes
1Body*Die-cast aluminumPlatinum silver coated
2BonnetDie-cast aluminumPlatinum silver coated
3ChamberDie-cast aluminumPlatinum silver coated
4Valve guide*Zinc die-castPlatinum silver coated
  • *For AR825/AR835/AR925/AR935, the material is aluminum alloy.

Replacement Parts

NumberPart nameMaterialsQuantityPart number
AR425/435AR625/635AR825/835AR925/935
5, 11Exhaust valve assembly (Note 1)-1132586A132586A132586A132586A
6Main valve side diaphragm assembly-1132581A132659A13275A13285A
7Valve assembly-1132572A132653A132752A132829A
8Pressure regulator springSteel wire1135053 (AR425)
135025 (AR435)		135053 (AR625)
135025 (AR635)		135053 (AR825)
135025 (AR835)		135053 (AR925)
135025 (AR935)
9Valve springStainless steel113521113265613271313289
10HandleABS113414

Note 1) Including diaphragm

Pilot-Operated Regulator AR425 to 935 Series Dimensional Drawings

AR425/AR435/AR625/AR635

 

(Unit: mm)

 

AR425/AR435/AR625/AR635: dimensional drawings

AR425/AR435/AR625/AR635: dimensional drawings

AR825/AR835/AR925/AR935

 

(Unit: mm)

 

AR825/AR835/AR925/AR935 dimensional drawings

AR825/AR835/AR925/AR935 dimensional drawings

ModelConnection port sizePressure gauge connection port sizeABCDEFBracket mounting dimensionsBracket
Part no.
GHJ
AR425/4351/4, 3/8, 1/21/480145.539.56773350.04880B24P
AR625/6353/4, 11/498155437878.57855290B25P
AR825/8351 1/4, 1 1/21/41262167511094.55----
AR925/93521/416024190140109.510----
  • *With pressure gauge: Pressure gauges shipped with regulator.

Usage precautions

  • *Release the lock to adjust the pressure. After the adjustment, engage the lock. Failure to observe this procedure could damage the handle or cause the outlet pressure to fluctuate. Loosen the handle locking screw to release the lock, and tighten it to lock it.
  • *Please consult the manufacturer separately if the product is to be used between solenoid valves and actuators.
30
45
60
  1. 1
Part Number
AR425-F03G-R
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipSupply Side, Connection Type Supply Side, Connection Dia. Flow Direction Control Side, Connection Type Control Side, Connection Dia. Pressure Gauge Size of Body Accessory Set Pressure

-

1 Piece(s) Quote G3/8[(Left)] Right→LeftG3/8[With Pressure Gauge] With Pressure Gauge4None0.05 to 0.83 MPa

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  1. 1
 

Basic Information

Regulator, Pressure Boosting Valve Regulator Regulator Type Standard Applicable Fluid Air
Shape Standard Operating Environment Standard Exhaust Mechanism Relief
Adverse Current Function No

Please check the type/dimensions/specifications of the part AR425-F03G-R in the Pilot-Operated Regulator AR425 to 935 Series series.

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Specification/Dimensions

  • type

    • AR425
    • AR435
    • AR625
    • AR635
    • AR825
    • AR835
    • AR925
    • AR935

    Clear

  • Supply Side, Connection Type

    • Rc
    • G
    • NPT
      • NPT

    Clear

  • Supply Side, Connection Dia.

    • 1/4
    • 3/8
    • 1/2
    • 3/4
    • 1
    • 1 1/4
    • 1 1/2
    • 2

    Clear

  • Flow Direction

    • (Right)
      • Left→Right
    • (Left)
      • Right→Left

    Clear

  • Control Side, Connection Type

    • Rc
    • G
    • NPT
      • NPT

    Clear

  • Control Side, Connection Dia.

    • 1/4
    • 3/8
    • 1/2
    • 3/4
    • 1
    • 1 1/4
    • 1 1/2
    • 2

    Clear

  • Pressure Gauge

    • Not Provided
      • No Pressure Gauge
    • With Pressure Gauge
      • With Pressure Gauge

    Clear

  • Size of Body

    • 4
    • 6
    • 8
    • 9

    Clear

  • Accessory

    • Bracket
    • Bracket + pressure gauge
    • None
    • Pressure gauge

    Clear

  • Set Pressure

    • 0.02 to 0.2 MPa
    • 0.05 to 0.83 MPa

    Clear

  • CAD

    • 2D
    • 3D

    Clear

Days to Ship

    • All
    • 21 Day(s) or Less
    • 31 Day(s) or Less

    Clear

Specify Alterations

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Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipSupply Side, Connection Type Supply Side, Connection Dia. Flow Direction Control Side, Connection Type Control Side, Connection Dia. Pressure Gauge Size of Body Accessory Set Pressure

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1 Piece(s) 21 Day(s) Rc1/4[(Left)] Right→LeftRc1/4[Not Provided] No Pressure Gauge4Bracket0.05 to 0.83 MPa

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1 Piece(s) 21 Day(s) Rc1/4[(Right)] Left→RightRc1/4[With Pressure Gauge] With Pressure Gauge4Bracket + pressure gauge0.05 to 0.83 MPa

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1 Piece(s) 21 Day(s) Rc1/4[(Left)] Right→LeftRc1/4[With Pressure Gauge] With Pressure Gauge4Bracket + pressure gauge0.05 to 0.83 MPa

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1 Piece(s) Quote G1/2[(Right)] Left→RightG1/2[Not Provided] No Pressure Gauge4None0.05 to 0.83 MPa

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1 Piece(s) Quote G1/2[(Left)] Right→LeftG1/2[Not Provided] No Pressure Gauge4None0.05 to 0.83 MPa

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1 Piece(s) Quote G1/2[(Right)] Left→RightG1/2[Not Provided] No Pressure Gauge4Bracket0.05 to 0.83 MPa

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