Airtac 4V300 Solenoid Valve 4V310-08-A
The AirTAC Airtac 4V300 Solenoid Valve 4V310-08-A is a genuine 5/2-way single solenoid (spring return) solenoid valve with A ports and an effective area of 28.0 mm² (Cv 1.65). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
- Valve type5/2-way
- FunctionSingle solenoid (spring return)
- Port sizeA
- Effective area28.0 mm²
- Flow (Cv)1.65
- Series4V300
About the Airtac 4V300 Solenoid Valve 4V310-08-A
The AirTAC 4V310-08A is a 5/2-way single-solenoid directional valve that controls compressed air flow to double-acting cylinders and actuators. It uses a spring-return mechanism, so the spool requires a constant AC220V signal to stay in the actuated position; de-energising the coil immediately returns the valve to its home state. This makes it a straightforward choice for circuits where the cylinder must default to a known position when power is cut.
Built on the 4V300 aluminium body, the 4V310-08A provides an effective area of 28.0 mm2 (Cv 1.65) and suits ~Ø50–80 mm cylinders. The terminal-box entry keeps wiring tidy inside a control cabinet, and the AC220V coil draws 4.5 VA. Response time is 0.05 s or below, and the IP65-rated enclosure handles dusty or washdown environments reliably.
Airtac 4V300 Solenoid Valve 4V310-08-A Technical Specifications
| Model | Airtac 4V300 Solenoid Valve 4V310-08-A |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | A |
| Exhaust port | A |
| Effective area (Cv) | 28.0 mm² (Cv 1.65) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Pilot type | Internal / external pilot |
| Operating pressure | 0.15 – 0.8 MPa |
| Proof pressure | 1.2 MPa |
| Max frequency | 4 cycle/sec |
| Response time | ≤ 0.05 s (activating) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Weight | 310 g |
Specifications follow the official AirTAC 4V series datasheet. Lubrication not required. Confirm coil voltage and thread (PT / NPT / G) against the product label before wiring.
Flow & Coil Options
| Effective area | 28.0 mm² |
|---|---|
| Flow coefficient | Cv 1.65 |
| Response time | ≤ 0.05 s |
| Coil power | AC 4.5 VA · DC24V 3.0 W · DC12V 2.5 W |
| Protection / insulation | IP65 (DIN40050), B-class |
| Voltage options | DC24V, DC12V, AC110V, AC220V |
| Manual override | Yes (locking / non-locking) |
Size the valve so effective area / Cv is not the bottleneck for your cylinder bore and speed. Undersized valves slow the actuator. Note 5/3 (center) versions have a smaller effective area than the 5/2 of the same body size.
Model Code: Airtac 4V300 Solenoid Valve 4V310-08-A
| 4V | Solenoid valve, spool type, 4-series. |
|---|---|
| 3 | Body size (4V300) — sets port & flow. |
| 1 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -A | Port thread: M5 / 06=1/8" / 08=1/4" / 10=3/8" / 15=1/2". |
Related: 4V310 (single), 4V320 (double), 4V330C/E/P (5/3 center). Add the voltage suffix when ordering.
Where the Airtac 4V300 Solenoid Valve 4V310-08-A Is Used
Machine-Tool Clamping
Directs air to a double-acting clamp cylinder on a CNC fixture. The spring-return action ensures the clamp releases when the E-stop circuit drops the AC220V signal.
Sorting Gate Actuation
Drives a Ø63 mm cylinder that diverts packages on a conveyor line. The 1/4 in port and Cv 1.65 flow capacity provide crisp gate movement at 4 cycles per second.
General Factory Automation
Powers double-acting actuators on assembly stations, presses, and material-handling lifts. The IP65 terminal-box design simplifies wiring inside a control panel.
Is the Airtac 4V300 Solenoid Valve 4V310-08-A the Right Valve?
Choose the 4V310-08A when you need a single-solenoid 5/2 valve with AC220V power and 1/4 in PT ports. If your cylinder is smaller than Ø50 mm, the 4V200 series (Cv 1.0) may be a better match; for bores above Ø80 mm, step up to the 4V400 (Cv 2.82). The single-solenoid design is ideal when the application requires the valve to return to a safe default position on power loss.
When replacing an existing valve, match five points: body size (4V300), function (5/2 single solenoid), port size and thread (1/4 in PT), coil voltage (AC220V), and electrical entry (terminal box). This valve can be used as a stand-alone unit or mounted on a manifold base for multi-valve assemblies.
Quick checklist
- ✓ Required flow (Cv) for cylinder & speed
- ✓ Function: single / double / 5-3 center
- ✓ Coil voltage (DC24 / AC220 …)
- ✓ Port thread (M5 / 1/8 / 1/4 / 3/8 / 1/2)
- ✓ Single valve or manifold base?
Installation & Wiring Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 0.8 MPa operating pressure.
- check Match coil voltage to your controller output.
- check Use the manual override to test before powering.
- check Fit silencers or fittings to the exhaust ports.
- check Wiring by qualified personnel per AirTAC docs.
Airtac 4V300 Solenoid Valve 4V310-08-A FAQ
With an effective area of 28.0 mm2 (Cv 1.65), it suits double-acting cylinders in the ~Ø50–80 mm range. For smaller bores a 4V200 may be more economical; for larger bores consider a 4V400.
No — this is a single-solenoid, spring-return model. The spool needs a continuous AC220V signal to hold the actuated position. When power is removed, the spring pushes the spool back to its home state, exhausting the cylinder port that was pressurised.
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