AirTAC 4V310-08E Solenoid Valve, 5/2-way, PT1/4, AC24V, terminal entry (4V31008E)
The AirTAC AirTAC 4V310-08E Solenoid Valve, 5/2-way, PT1/4, AC24V, terminal entry (4V31008E) is a genuine 5/2-way single solenoid (spring return) solenoid valve with 31008E 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 size31008E
- Effective area28.0 mm²
- Flow (Cv)1.65
- Series4V300
About the AirTAC 4V310-08E Solenoid Valve, 5/2-way, PT1/4, AC24V, terminal entry (4V31008E)
The AirTAC 4V310-08E is a 5/2-way single-solenoid directional control valve built on the 4V300 body platform. It directs compressed air to double-acting cylinders and actuators, pressurizing one side while exhausting the other. This model requires a continuous AC24V electrical signal to hold the shifted position; when de-energized, the integrated mechanical spring returns the spool to its home state, making it a predictable choice for fail-to-home circuits.
With 1/4-inch PT (Rc) ports and a terminal-box electrical entry, the 4V310-08E fits neatly into standard pneumatic panels. Its 28.0 mm² effective area (Cv 1.65) provides ample flow for driving cylinders in the ~O50 to 80 mm bore range. The AC24V coil draws 5.0 VA inrush power, and the aluminum-alloy body keeps total weight to just 310 grams, with a fast response time of 0.05 seconds or less.
AirTAC 4V310-08E Solenoid Valve, 5/2-way, PT1/4, AC24V, terminal entry (4V31008E) Technical Specifications
| Model | AirTAC 4V310-08E Solenoid Valve, 5/2-way, PT1/4, AC24V, terminal entry (4V31008E) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 31008E |
| Exhaust port | 31008E |
| 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 4V310-08E Solenoid Valve, 5/2-way, PT1/4, AC24V, terminal entry (4V31008E)
| 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. |
| -31008E | 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 4V310-08E Solenoid Valve, 5/2-way, PT1/4, AC24V, terminal entry (4V31008E) Is Used
Clamping & Fixturing
Controls a double-acting clamp cylinder on a machining-center fixture, where the spring-return action ensures the clamp releases automatically if AC24V control power is interrupted.
Part Diverter Gates
Shifts a gate cylinder on a conveyor line to sort packages. The 4 c/s maximum cycling speed handles moderate-throughput sorting tasks reliably.
Pneumatic Press Actuation
Pilots a larger air-pilot-operated valve or drives a medium-bore press cylinder directly, leveraging the 28.0 mm² effective area for crisp, consistent ram motion.
Is the AirTAC 4V310-08E Solenoid Valve, 5/2-way, PT1/4, AC24V, terminal entry (4V31008E) the Right Valve?
Select the 4V310-08E when you need a spring-return 5/2 function on a 1/4-inch ported base. If your cylinder bore is smaller (O32-40 mm), the 4V200 series with its Cv of 1.0 may offer a more compact, cost-effective fit. For larger bores above O80 mm, step up to the 4V400 body where the Cv jumps to 2.82 for faster cylinder velocities. When replacing an existing valve, match five points: the 4V300 body size, the 10 (single-solenoid) function, the 08 (1/4-inch) port size, the coil voltage (AC24V here), and the terminal-box entry style. This valve can be mounted individually or ganged on a common 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 4V310-08E Solenoid Valve, 5/2-way, PT1/4, AC24V, terminal entry (4V31008E) FAQ
With an effective area of 28.0 mm² (Cv 1.65), it suits double-acting cylinders approximately in the O50 to O80 mm bore range for general industrial speeds. Exact sizing depends on your required cycle time and operating pressure.
Yes. The 4V310-08E is a single-solenoid, spring-return model. The AC24V coil must remain energized to hold the spool in the actuated position. Removing power immediately returns the spool via the mechanical spring.
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