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VG342 Series Pilot Operated Poppet Type 3 Port Solenoid Valve (Rubber Seal)

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Series VG342 is a 3 port pilot poppet solenoid valve and can be used as a selector or divider valve (external pilot). Actuation is changeable between N.C., N.O., or external pilot types. VG342 is possible to use in a vacuum or under low pressure.
  • VG342

  • VPC Pneumatic

Pressure specification:
Guaranteed pressure:
Port size:
Thread type:
Availability:

Product Description

Product Feature

1. Low power consumption 

DC4 W (Standard type), DC1.8 W (Energy-saving type)

No lubrication required. Possible to use in vacuum or under low pressures 

2. External pilot 

Vacuum: Up to –101.2 kPa, Low pressure: 0 to 0.2 MPa 

3. Changeable actuation: N.C., N.O., or external pilot 

4. Can be used as a selector or divider valve (External pilot)



 Symbol

smc pilot solenoid valve

vacuum solenoid valve

pilot operated solenoid valve

* Use external pilot type in the following cases: 

  1)For vacuum or for low pressure 0.2 MPa or less. 

  2)When having P port downsized in diameter.

Product Specifications

Specification

Type of actuationIn common between N.C. and N.O.
Working mediumAir
Acting typeInternal pilot typeExternal pilot type
Working pressure0.2 to 0.9 MPa-101.2 kPa to 0.9 MPa
External pilot operating
pressure range
-Same as the operating pressure (Min. 0.2 MPa)
Response time*1)30 ms or less (at the pressure of 0.5 MPa)
Max. operating frequency5 c/s (Min. operating frequency: 1 c/30 days based on JIS B 8374-1981)
Working temperature-10 to 50°C (No freezing)
LubricationNot required (Use turbine oil Class 1 ISO VG32, if lubricated.)
Manual overridePush type (Non-locking)
Mounting orientationUnrestricted
Impact/Vibration resistance*2)150/50 m/s2

*1) Based on dynamic performance test JIS B 8419: 2010. (Coil temperature 20°C, at rated voltage, without surge voltage suppressor) 

*2) Impact resistance: No malfunction occurred when it is tested with a drop tester in the axial direction and at the right angles to the   main valve and armature in both energized and de-energized states every once for each condition. (Values   at the initial period) 

      Vibration resistance: No malfunction occurred in a one-sweep test between 45 and 1000 Hz. Test was performed at both energized  and de-energized states in the axial direction and at the right angles to the main valve and armature.   (Values at the initial period)




Flow Characteristics

Port sizeFlow Characteristics
1→2(P→A)2→3(A→R)2→1(A→P)3→2(R→A)

C

[dm³/(s·bar)]

bCv

C

[dm³/(s·bar)]

bCv

C

[dm³/(s·bar)]

bCv

C

[dm³/(s·bar)]

bCv
1/2260.387.0270.377.4270.367.3250.376.8
3/4380.309.8380.329.8400.229.8400.209.6


Port sizeEffective area (mm²)
1→2(P→A)2→3(A→P)
1210235



Pilot Valve Assembly Specifications

Electrical entryGrommet (G), DIN terminal (D)
EnclosureDusttight
Coil rated voltageAC(50/60 Hz)100V, 200V, 110V, 220V, 240V
DC24V,12V
Allowable voltage fluctuation-15 to+10% of rated voltage
Apparent power VA (Hz)ACInrush12.7(50), 10.7(60)
Holding7.6(50), 5.4(60)
Power consumptionDCWithout indicator light: 4 W
With indicator light: 4.2 W



Product Dimensions

 Main Dimensions


vacuum solenoid valve 12v

VG342



 How to Change Passage State

When changing the passage state, confirm that pressure has been removed from the valve. Unscrew the M4 x 0.7 hexagon socket head cap screw in the changeover plate and match the◀mark on the adapter plate with the character on the changeover plate. Piping is as follows.

SMC VG342

Mounting Screw Tightening Torques 

M4: 1.4 N·m


Piping

Fluide passage/Port

P

A

R

N.C.

Inlet side

Outlet side

Exhaust side (Plug, in case of 2 port valve)

N.O.

Exhaust side (Plug, in case of 2 port valve)

Outlet side

Inlet side

External

Universal porting (Piping of inlet pressure side is possible anywhere)

*1) In the case of internal pilot, confirm that a plug is inserted to X port. If not, insert a R 1/8 plug. 

*2) In the case of external pilot, supply air pressure from X port. 

Confirm the safety sufficiently and conduct carefully when changing the passage state or restarting after changes.

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