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3 Port Air Operated Valve VGA342 Series (Part Numbers)
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.
Part Number
Configured Part Number is shown.
VGA342-04NA
3 Port Air Operated Valve VGA342 Series Specifications
3 Port Air Operated Valve VGA342 Series external appearance
VGA342 Series JIS symbol (N.C.)
VGA342 Series JIS symbol (N.O.)
| Operating Method | Air operated |
|---|---|
| Switching Method | N.C. or N.O. (changeable) |
| Return Mechanism | Air + spring |
| Fluid | Air |
| Operating Pressure Range | 0.2 to 0.9 MPa |
| Pilot Pressure | Equal to operating pressure |
| Ambient and Working Fluid Temperature | -10°C to +50°C (no freezing.) |
| Lubrication | Not required (if lubricating, use turbine oil class 1 ISO VG32) |
| *Impact/Vibration Resistance | 150/50 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 Diameter | Flow Rate Characteristics | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 → 2 (P → A) | 2 → 3 (A → R) | 2 → 1 (A → R) | 3 → 2 (R → A) | |||||||||
| C (dm3/[s·bar]) | b | Cv | C (dm3/[s·bar]) | b | Cv | C (dm3/[s·bar]) | b | Cv | C (dm3/[s·bar]) | b | Cv | |
| 1/2 | 26 | 0.38 | 7.0 | 27 | 0.37 | 7.4 | 27 | 0.36 | 7.3 | 25 | 0.37 | 6.8 |
| 3/4 | 38 | 0.30 | 9.8 | 38 | 0.32 | 9.8 | 40 | 0.22 | 9.8 | 40 | 0.20 | 9.6 |
| Piping Connection Port Diameter | Effective area (mm2) | |
|---|---|---|
| 1 → 2 (P → A) | 2 → 3 (A → R) | |
| 1 | 210 | 235 |
Drawing
(Units: mm)
VGA342 Series dimensional drawing
External Pilot Type Air Operated Valve VGA342R Series Specifications
VGA342R Series JIS symbol
| Valve Type | External pilot type air operated valve | |
|---|---|---|
| Switching Method | Universal porting | |
| Fluid | Air | |
| Operating Pressure Range | Main Pressure | -101.2 kPa to 0.9 MPa |
| Pilot Pressure | Equal to main pressure (min. 0.2 MPa or more) | |
| External Pilot | Equivalent to pilot pressure | |
| Ambient and Working Fluid Temperature | -10°C to +50°C (no freezing.) | |
| Weight | 1.2 kg | |
Drawing
(Units: mm)
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.)
*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
| Passage | Port | ||
|---|---|---|---|
| P | A | R | |
| N.C. | Primary side | Secondary side | Exhaust side (Plug if using a 2 way valve) |
| N.O. | Exhaust side (Plug if using a 2 way valve) | Secondary side | Primary 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.
| Part Number |
|---|
| VGA342-04NA |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Switching Type | Connection Type | Plumbing Thread Nominal | Valve type |
|---|---|---|---|---|---|---|---|---|
SGD 291.67 | 1 Piece(s) | 32 Day(s) | Normally Closed | NPT | 1/2 | Internal pilot |
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Basic Information
| Type | Air Operating Type | Applicable Fluid | Air | Operating Environment | Standard |
|---|---|---|---|---|---|
| Driving Type | Pilot Type | Pilot number | Single | Number of ports | 3 |
Please check the type/dimensions/specifications of the part VGA342-04NA in the 3 Port Air Operated Valve VGA342 Series series.
Specification/Dimensions
-
type
- VGA342
- VGA342R
-
Switching Type
- Normally Closed
- Normally Open
- 3-Port Universal
-
Connection Type
- Rc (R)
- G
- NPT
- NPTF
- Rc (R)
-
Plumbing Thread Nominal
-
Valve type
-
CAD
- 2D
- 3D
Days to Ship
-
- All
- 32 Day(s) or Less
Specify Alterations
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Similar Part Numbers
| Part Number |
|---|
| VGA342-04A |
| VGA342-04B |
| VGA342-04FA |
| VGA342-04NB |
| VGA342-04TA |
| VGA342-06A |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Switching Type | Connection Type | Plumbing Thread Nominal | Valve type |
|---|---|---|---|---|---|---|---|---|
SGD 291.67 | 1 Piece(s) | 32 Day(s) | Normally Closed | [Rc (R)] Rc | 1/2 | Internal pilot | ||
SGD 291.67 | 1 Piece(s) | 32 Day(s) | Normally Open | [Rc (R)] Rc | 1/2 | Internal pilot | ||
SGD 291.67 | 1 Piece(s) | 32 Day(s) | Normally Closed | G | 1/2 | Internal pilot | ||
SGD 291.67 | 1 Piece(s) | 32 Day(s) | Normally Open | NPT | 1/2 | Internal pilot | ||
SGD 291.67 | 1 Piece(s) | 32 Day(s) | Normally Closed | NPTF | 1/2 | Internal pilot | ||
SGD 291.67 | 1 Piece(s) | 32 Day(s) | Normally Closed | [Rc (R)] Rc | 3/4 | Internal pilot |
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