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3 Port Air Operated Valve VGA342 Series

3 Port Air Operated Valve VGA342 Series

SMC

SMC

An air operated valve made by SMC.
[Features]
· Easy to switch between N.C. and N.O.

(i)Caution

  • Product images may be representative images. Refer to the catalog for details.

PDF

Part Number

Configured Part Number is shown.

3 Port Air Operated Valve VGA342 Series Specifications

3 Port Air Operated Valve VGA342 Series external appearance

3 Port Air Operated Valve VGA342 Series external appearance

VGA342 Series JIS symbol (N.C.)

VGA342 Series JIS symbol (N.C.)

VGA342 Series JIS symbol (N.O.)

VGA342 Series JIS symbol (N.O.)

Operating MethodAir operated
Switching MethodN.C. or N.O. (changeable)
Return MechanismAir + spring
FluidAir
Operating Pressure Range0.2 to 0.9 MPa
Pilot PressureEqual to operating pressure
Ambient and Working Fluid Temperature-10°C to +50°C (no freezing.)
LubricationNot required (if lubricating, use turbine oil class 1 ISO VG32)
*Impact/Vibration Resistance150/50 m/s2

*Impact resistance: No malfunctions after testing using a drop-type shock tester under the following conditions: in the axial direction and at a right angle to the main valve with both pilot signal ON and OFF, once for each condition state. (Initial value)
Vibration resistance: No malfunctions occurred in a 1-sweep test between 45 and 1,000 Hz. The test was performed with both pilot signal ON and OFF and in the axial direction and at right angles to the main valve. (Initial value)

Flow Rate Characteristics Table

Piping Connection Port DiameterFlow Rate Characteristics
1 → 2 (P → A)2 → 3 (A → R)2 → 1 (A → R)3 → 2 (R → A)
C (dm3/[s·bar])bCvC (dm3/[s·bar])bCvC (dm3/[s·bar])bCvC (dm3/[s·bar])bCv
1/2260.387.0270.377.4270.367.3250.376.8
3/4380.309.8380.329.8400.229.8400.209.6
Piping Connection Port DiameterEffective area (mm2)
1 → 2 (P → A)2 → 3 (A → R)
1210235

Drawing

 

(Units: mm)

 

VGA342 Series dimensional drawing

VGA342 Series dimensional drawing

External Pilot Type Air Operated Valve VGA342R Series Specifications

VGA342R Series JIS symbol

VGA342R Series JIS symbol

Valve TypeExternal pilot type air operated valve
Switching MethodUniversal porting
FluidAir
Operating Pressure RangeMain Pressure-101.2 kPa to 0.9 MPa
Pilot PressureEqual to main pressure (min. 0.2 MPa or more)
External PilotEquivalent to pilot pressure
Ambient and Working Fluid Temperature-10°C to +50°C (no freezing.)
Weight1.2 kg

Drawing

 

(Units: mm)

 

VGA342R Series dimensional drawing

VGA342R Series dimensional drawing

Precautions

Changing Fluid Passage Condition / Piping Method

Illustrations showing changing of the fluid passage condition (left image: N.C. / right image: N.O.)

Illustrations showing changing of the fluid passage condition (left image: N.C. / right image: N.O.)

*Make sure that the pressure inside the valve is exhausted before changing the flow passage state.
Loosen the M4 × 0.7 hex socket head cap screw on the switch board and align the ▲ mark on the adapter plate with the required passage symbol (N.C./N.O.) on the switch plate. However, the X symbol cannot be used.
Moreover, follow the table on the right for piping.
Screw tightening torque M4: 1.4 N·m

Piping Method

PassagePort
PAR
N.C.Primary sideSecondary sideExhaust side
(Plug if using a 2 way valve)
N.O.Exhaust side
(Plug if using a 2 way valve)		Secondary sidePrimary side

*Use adequate caution and check it is safe when changing the fluid passage state or when starting up again afterwards.

Other

*The M5 hole on the left side of the adapter plate is the spool valve ventilation hole. Do not plug or obstruct it.

30
45
60
  1. 1
Part Number
VGA342-04A
VGA342-04B
VGA342-04FA
VGA342-04NA
VGA342-04NB
VGA342-04TA
VGA342-06A
VGA342-06FA
VGA342-06NA
VGA342-06NB
VGA342-10A
VGA342-10FA
VGA342-10NA
VGA342R-04
VGA342R-04N
VGA342R-06
VGA342R-06F
VGA342R-06N
VGA342R-10
VGA342R-10N
Part NumberMinimum order quantityVolume DiscountDays to ShipSwitching Type Connection Type Plumbing Thread Nominal Valve type
1 Piece(s) 31 Day(s) Normally Closed[Rc (R)] Rc1/2Internal pilot
1 Piece(s) 31 Day(s) Normally Open[Rc (R)] Rc1/2Internal pilot
1 Piece(s) 31 Day(s) Normally ClosedG1/2Internal pilot
1 Piece(s) 31 Day(s) Normally ClosedNPT1/2Internal pilot
1 Piece(s) 31 Day(s) Normally OpenNPT1/2Internal pilot
1 Piece(s) 31 Day(s) Normally ClosedNPTF1/2Internal pilot
1 Piece(s) 31 Day(s) Normally Closed[Rc (R)] Rc3/4Internal pilot
1 Piece(s) 31 Day(s) Normally ClosedG3/4Internal pilot
1 Piece(s) 31 Day(s) Normally ClosedNPT3/4Internal pilot
1 Piece(s) 31 Day(s) Normally OpenNPT3/4Internal pilot
1 Piece(s) 31 Day(s) Normally Closed[Rc (R)] Rc1Internal pilot
1 Piece(s) 31 Day(s) Normally ClosedG1Internal pilot
1 Piece(s) 31 Day(s) Normally ClosedNPT1Internal pilot
1 Piece(s) 31 Day(s) 3-Port Universal[Rc (R)] Rc1/2External Pilot
1 Piece(s) 31 Day(s) 3-Port UniversalNPT1/2External Pilot
1 Piece(s) 31 Day(s) 3-Port Universal[Rc (R)] Rc3/4External Pilot
1 Piece(s) 31 Day(s) 3-Port UniversalG3/4External Pilot
1 Piece(s) 31 Day(s) 3-Port UniversalNPT3/4External Pilot
1 Piece(s) 31 Day(s) 3-Port Universal[Rc (R)] Rc1External Pilot
1 Piece(s) 31 Day(s) 3-Port UniversalNPT1External Pilot

Loading...

  1. 1
 

Basic Information

Type Air Operating Type Applicable Fluid Air Operating Environment Standard
Driving Type Pilot Type Pilot number Single Number of ports 3

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Specification/Dimensions

  • Switching Type

    • Normally Closed
    • Normally Open
    • 3-Port Universal

    Clear

  • Connection Type

    • Rc (R)
      • Rc
    • G
    • NPT
    • NPTF

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  • Plumbing Thread Nominal

    • 1/2
    • 3/4
    • 1

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  • Valve type

    • External Pilot
    • Internal pilot

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  • type

    • VGA342
    • VGA342R

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  • CAD

    • 2D
    • 3D

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Days to Ship

    • All
    • 31 Day(s) or Less

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