AirTAC 4V310-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V31008CI)
The AirTAC AirTAC 4V310-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V31008CI) is a genuine 5/2-way single solenoid (spring return) solenoid valve with 31008CI 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 size31008CI
- Effective area28.0 mm²
- Flow (Cv)1.65
- Series4V300
About the AirTAC 4V310-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V31008CI)
The AirTAC 4V310-08CI directs compressed air to double-acting cylinders and actuators in a 5/2-way configuration with spring return. Energise the AC110V coil to shift the spool and extend the cylinder; de-energise and the mechanical spring snaps it back to retract. This model comes with a grommet-style electrical entry—a 0.5 m pre-wired flying lead that simplifies DIN-rail routing and keeps the IP65 protection intact.
With an effective area of 28.0 mm2 (Cv 1.65) and a response time of 0.05 s or below, it suits ~O50-80 mm bore cylinders in sorting gates, clamping fixtures and ejector stations. The 4V300 aluminium body weighs 310 g and runs on filtered, non-lubricated air from 0.15-0.8 MPa. A locking manual override lets you test the circuit without powering the coil.
AirTAC 4V310-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V31008CI) Technical Specifications
| Model | AirTAC 4V310-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V31008CI) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 31008CI |
| Exhaust port | 31008CI |
| 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 4V310-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V31008CI)
| 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. |
| -31008CI | 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 4V310-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V31008CI) Is Used
Sorting & Diverting Gates
The spring-return action drives a diverter gate on a packaging conveyor. Power the AC110V coil to swing the gate; cut power and the spring returns it, ensuring product flows to the default lane without delay.
Clamping & Fixturing
Controls a double-acting clamp on a CNC fixture. Energise to clamp the workpiece with full line pressure; de-energise to release. The 28.0 mm2 effective area fills a O63 mm clamp cylinder quickly for short cycle times.
Ejector Stations
Drives an eject cylinder on an injection-moulding pick-and-place. The grommet lead keeps wiring tidy inside the machine guard, and the 0.05 s response gives crisp part ejection at high cadence.
Is the AirTAC 4V310-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V31008CI) the Right Valve?
Choose the 4V310-08CI when you need a single-solenoid 5/2 valve that returns the cylinder to a safe home position on power loss—ideal for eject or clamp-return functions. If your cylinder is smaller (O32-40 mm), the 4V200 body (Cv 1.0) may be a better match; for larger bores above O80 mm, step up to the 4V400 (Cv 2.82). This SKU is pre-configured with AC110V power and a grommet lead-out, so you do not need a separate DIN connector. When replacing an existing valve, match all five points: 4V300 body size, 5/2 single-solenoid function, 1/4-inch PT-threaded ports, AC110V coil voltage, and grommet electrical entry. The valve can be used standalone or on a 4V300 manifold base for multi-cylinder banks.
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 4V310-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V31008CI) FAQ
Its 28.0 mm2 effective area (Cv 1.65) suits double-acting cylinders roughly in the O50-80 mm bore range for general industrial speeds. A smaller cylinder will cycle faster; a larger bore will move more slowly. Match the Cv to your speed and load requirement.
Yes. The 'I' suffix means the valve has a 0.5 m flying-lead cable instead of a terminal box. You connect the three wires (live, neutral, earth) directly to your AC110V supply inside a junction box or cable gland, which preserves the IP65 rating without a separate DIN connector.
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