The AirTAC Airtac 4V Solenoid Valves 4V230C-08BG is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 08BG ports and an effective area of 13.6 mm² (Cv 0.8). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
The 4V230C-08BG is a 5/3-way double-solenoid pneumatic directional valve that directs compressed air to double-acting cylinders and actuators while providing a defined center state. When both solenoids are de-energised, the closed-center spool blocks all ports, trapping air on both sides of the piston to hold the cylinder in position—useful for mid-stroke stops where drift must be minimised.
This configuration ships with a DC24V coil drawing just 3.0 W, terminated with an integrated grommet-style 0.5 m flying lead for fast DIN-rail wiring. The valve body carries G (BSPP parallel) 1/4-inch cylinder ports and a 1/8-inch exhaust, delivering an effective area of 13.6 mm² (Cv 0.8) at a maximum cycling rate of 3 cycles per second. Response time is 0.05 s or less, and the IP65-rated enclosure keeps the 360 g aluminium body protected in washdown and dusty environments.
| Model | Airtac 4V Solenoid Valves 4V230C-08BG |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 08BG |
| Exhaust port | 08BG |
| Effective area (Cv) | 13.6 mm² (Cv 0.8) |
| 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 | 3 cycle/sec |
| Response time | ≤ 0.05 s (activating) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Weight | 360 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.
| Effective area | 13.6 mm² |
|---|---|
| Flow coefficient | Cv 0.8 |
| 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.
| 4V | Solenoid valve, spool type, 4-series. |
|---|---|
| 2 | Body size (4V200) — sets port & flow. |
| 3 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -08BG | Port thread: M5 / 06=1/8" / 08=1/4" / 10=3/8" / 15=1/2". |
Related: 4V210 (single), 4V220 (double), 4V230C/E/P (5/3 center). Add the voltage suffix when ordering.
The closed center blocks all ports at rest, letting a clamp cylinder pause mid-stroke and hold a workpiece while another operation completes—ideal for assembly fixtures and light pressing stations.
A 5/3 closed-center valve stops a gate cylinder partway through its travel, creating a precise indexing motion on packaging or sorting conveyors without the cylinder drifting under load.
In test stands and lab automation, the 4V230C-08BG holds a pneumatic actuator at an intermediate setpoint so sensors can take readings, then continues the stroke when the next solenoid pulse arrives.
Choose the 4V230C-08BG when your double-acting cylinder needs a reliable mid-position hold without continuous solenoid power. The closed center suits vertical or inclined loads where you want to pause the stroke, though for true load-holding safety you should add a pilot-operated check valve at the cylinder ports. If your cylinder bore is below O25 mm, the smaller 4V100 series (Cv 0.6) may give finer control; for bores above O50 mm or faster cycle times, step up to the 4V300 body (Cv 1.65).
When replacing an existing valve, match five points: the 4V200 body size, the 5/3 closed-center function (30C), the G1/4 port thread, a DC24V coil, and the grommet electrical entry. This model can be mounted individually or ganged on a manifold base, and the G-thread ports accept BSPP parallel fittings—confirm your plumbing matches before ordering.
Quick checklist
With an effective area of 13.6 mm² (Cv 0.8) it suits double-acting cylinders roughly in the O32-50 mm range. Smaller bores may overshoot; larger bores will move more slowly—if you need faster cycling on a O63 mm cylinder, consider the 4V300 series instead.
When both solenoids are off, the spool moves to the center position and blocks all ports (P, A, B, EA, EB). Air trapped on both sides of the piston resists movement, so the cylinder tends to stay where it stopped. This is not a safety-rated hold—for suspended loads, add a mechanical brake or pilot-operated check valve.
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