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An air operated valve made by SMC.
[Features]
· Internal pilot specification manifolds that are the same as for VP300/500/700 series are available.
· Easy to switch between N.C. and N.O.
Part Number
Configured Part Number is shown.
VPA344-1-01TB

VPA300 Series external appearance

VPA500 Series external appearance

VPA700 Series external appearance
| Fluid | Air | |
|---|---|---|
| Switching Method | N.C. or N.O. (changeable) | |
| Operating Pressure Range (MPa) | Standard | 0.2 to 1.0 |
| For vacuums | -100 kPa to 0.2 | |
| Pilot Pressure (MPa) | 0.2 to 1.0 (equal to or exceeding the operating pressure) | |
| Ambient and Working Fluid Temperature °C | -10 to +50 (no freezing.) | |
| Lubrication | Not required | |
| Mounting Orientation | Free | |
| Impact/Vibration Resistance (m/s2*) | 300/50 | |
*Impact resistance: No malfunctions after testing 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 2,000 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)
| Model | Piping Connection Port Diameter | 1 ←→ 2 (P ←→ A) | 2 ←→ 3 (A ←→ R) | Weight (g)* | ||||
|---|---|---|---|---|---|---|---|---|
| C [dm3/(s·bar)] | b | Cv | C [dm3/(s·bar)] | b | Cv | |||
| VPA344 | 1/8 | 3.6 | 0.22 | 0.8 | 3.5 | 0.24 | 0.8 | 185 (118) |
| 1/4 | 3.9 | 0.22 | 0.9 | 3.8 | 0.14 | 0.9 | 180 (118) | |
| VPA544 | 1/4 | 7.5 | 0.16 | 1.7 | 7.3 | 0.20 | 1.7 | 358 (233) |
| 3/8 | 8.8 | 0.07 | 2.0 | 8.8 | 0.13 | 2.0 | 350 (233) | |
| VPA744 | 3/8 | 12.9 | 0.10 | 2.9 | 13.3 | 0.24 | 3.1 | 693 (476) |
| 1/2 | 14.7 | 0.05 | 3.3 | 15.0 | 0.17 | 3.4 | 675 (476) | |
*Values in ( ) are for without sub-plate.

Standard type diagram

For vacuums - diagram
Component Parts
| Number | Part Name | Material | Notes |
|---|---|---|---|
| 1 | Body | Diecast aluminum | Urban white |
| 2 | Adapter Plate | Diecast aluminum | Urban gray |
| 3 | End Plate | Resin | Urban white |
| 4 | Piston | Resin | - |
| 5 | Poppet Valve | Aluminum, HNBR | - |
| 6 | Retainer | Resin | - |
| 7 | Spring | SUS | - |
Replacement Parts
| Number | Part Name | Part number | Notes | ||
|---|---|---|---|---|---|
| VP344 | VP544 | VP744 | |||
| 8 | Gasket | VP300-217-1 | VP500-217-1 | VP700-217-1 | HNBR |
| 9 | Sub-Plate | VP300-202-□ | VP500-202-□ | VP700-202-□ | Diecast aluminum |
| - | Hexagon socket head cap screw (1 pc.) | VP300-224-1 (M3 × 36) | VP500-224-1 (M4 × 46) | VP700-224-1 (M5 × 66) | For valve mounting |
*Mounting screw tightening torque: M3 (0.8 N·m) / M4 (1.4 N·m) / M5 (2.9 N·m)
(Units: mm)

Standard type: VPA344-1-01/02□A/B dimensional drawing
(Units: mm)

For vacuums: VPA344V-1-01/02□A/B dimensional drawing
(Units: mm)

Standard type: VPA544-1-02/03□A/B dimensional drawing
(Units: mm)

For vacuums: VPA544V-1-02/03□A/B dimensional drawing
(Units: mm)

Standard type: VPA744-1-03/04□A/B dimensional drawing
*See the SMC catalog for information other than that detailed above.
| Part Number |
|---|
| VPA344-1-01TB |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Applicable Fluid | Plumbing Thread Nominal | Switching Type | Driving Type | Connection Type | Detailed type | Valve type |
|---|---|---|---|---|---|---|---|---|---|---|---|
- | 1 Piece(s) | Quote | Air | 1/8 | Normally Open | Pilot Type | NPTF | - | Base mounted |
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| Type | Air Operating Type | Operating Environment | Standard / No oil | Pilot number | Single |
|---|---|---|---|---|---|
| Number of ports | 3 |
Please check the type/dimensions/specifications of the part VPA344-1-01TB in the 3 Port Air Operated Valve, Base Mounted Single Unit VPA300/500/700 Series series.
| Part Number |
|---|
| VPA344-1-01FB |
| VPA344-1-01NA |
| VPA344-1-01NB |
| VPA344-1-02A |
| VPA344-1-02B |
| VPA344-1-02FA |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Applicable Fluid | Plumbing Thread Nominal | Switching Type | Driving Type | Connection Type | Detailed type | Valve type |
|---|---|---|---|---|---|---|---|---|---|---|---|
- | 1 Piece(s) | Quote | Air | 1/8 | Normally Open | Pilot Type | G | - | Base mounted | ||
MYR 482.50 | 1 Piece(s) | 21 Day(s) | Air | 1/8 | Normally Closed | Pilot Type | NPT | - | Base mounted | ||
- | 1 Piece(s) | Quote | Air | 1/8 | Normally Open | Pilot Type | NPT | - | Base mounted | ||
MYR 388.97 | 1 Piece(s) | 3 Day(s) | Air | 1/4 | Normally Closed | Pilot Type | [Rc (R)] Rc | - | Base mounted | ||
MYR 392.98 | 1 Piece(s) | 10 Day(s) or more | Air | 1/4 | Normally Open | Pilot Type | [Rc (R)] Rc | - | Base mounted | ||
- | 1 Piece(s) | Quote | Air | 1/4 | Normally Closed | Pilot Type | G | - | Base mounted |
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