AirTAC 4V310-08BG Solenoid Valve, 5/2-way, G1/4, DC24V, grommet entry (4V31008BG)
The AirTAC AirTAC 4V310-08BG Solenoid Valve, 5/2-way, G1/4, DC24V, grommet entry (4V31008BG) is a genuine 5/2-way single solenoid (spring return) solenoid valve with 31008BG 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 size31008BG
- Effective area28.0 mm²
- Flow (Cv)1.65
- Series4V300
About the AirTAC 4V310-08BG Solenoid Valve, 5/2-way, G1/4, DC24V, grommet entry (4V31008BG)
The 4V310-08BG is a single-solenoid, 5/2-way pneumatic directional valve built on AirTAC's 4V300 body, configured here with 1/4-inch G (BSPP parallel) ports and a DC24V coil terminated via a grommet-style flying lead. It directs compressed air to double-acting cylinders and actuators—energising the solenoid shifts the spool to extend the cylinder, and de-energising it allows the integrated spring to return the spool and retract the load. This spring-return action makes it a dependable choice for cycles where the valve must default to a known safe position when power is cut.
With an effective flow area of 28.0 mm² (Cv 1.65) and a response time of 0.05 seconds or less, this valve comfortably handles cylinder bores in the ~50–80 mm range. The DC24V coil draws just 3.0 W, keeping control-panel thermal load low, while the IP65-rated enclosure and pre-wired grommet entry simplify installation on machines where a terminal box is less convenient. The aluminum-alloy body weighs 310 g and operates on filtered, non-lubricated air from 0.15–0.8 MPa.
AirTAC 4V310-08BG Solenoid Valve, 5/2-way, G1/4, DC24V, grommet entry (4V31008BG) Technical Specifications
| Model | AirTAC 4V310-08BG Solenoid Valve, 5/2-way, G1/4, DC24V, grommet entry (4V31008BG) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 31008BG |
| Exhaust port | 31008BG |
| 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 4V310-08BG Solenoid Valve, 5/2-way, G1/4, DC24V, grommet entry (4V31008BG)
| 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. |
| -31008BG | 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 4V310-08BG Solenoid Valve, 5/2-way, G1/4, DC24V, grommet entry (4V31008BG) Is Used
Clamping & Fixturing
Controls a double-acting clamp cylinder on a machining centre. The spring-return design ensures the clamp releases automatically if power or air is interrupted, protecting the workpiece and tooling from damage.
Diverter Gates
Actuates a pneumatic gate on a conveyor line to sort packages. The fast 0.05 s response and Cv 1.65 flow rate deliver crisp, repeatable gate movements for high-throughput material handling.
Press & Forming Tools
Pilots a double-acting cylinder on a small pneumatic press. The DC24V grommet coil simplifies wiring into the machine's safety circuit, and the IP65 rating stands up to dusty workshop conditions.
Is the AirTAC 4V310-08BG Solenoid Valve, 5/2-way, G1/4, DC24V, grommet entry (4V31008BG) the Right Valve?
Choose the 4V310-08BG when your application needs a single electrical signal to drive a double-acting cylinder, with an automatic spring return to the home position on power loss. The 1/4-inch G-thread ports suit compact manifold or sub-base mounting, and the grommet entry with a flying lead is ideal where space around the coil is tight or where a quick-connect electrical interface is preferred over a terminal box.
For a matching replacement, confirm five points: the 4V300 body size, the 5/2 single-solenoid function, the 1/4-inch port with G (BSPP) thread, a DC24V coil, and the grommet electrical entry. If you are driving a smaller bore (below ~40 mm), stepping down to a 4V200 (Cv 1.0) may improve cycle precision; for larger bores above 80 mm, the 4V400 (Cv 2.82) provides the necessary flow. When the valve must hold its last position without constant power, consider the double-solenoid 4V320 variant instead.
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 4V310-08BG Solenoid Valve, 5/2-way, G1/4, DC24V, grommet entry (4V31008BG) FAQ
With an effective area of 28.0 mm² (Cv 1.65), it is well-matched to double-acting cylinders with bores in the ~50–80 mm range for typical industrial cycle speeds. It can drive smaller or larger cylinders, but speed will vary; for a precise match, calculate the cylinder's air consumption against the valve's Cv.
Yes. The 4V310-08BG is a single-solenoid, spring-return valve. The DC24V coil must remain energised to hold the spool in the actuated position. When power is removed, the mechanical spring automatically returns the spool to its home position, exhausting the cylinder's previously pressurised side.
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