The AirTAC Airtac 4V Solenoid Valves 4V210-08BG is a genuine 5/2-way single solenoid (spring return) solenoid valve with 08BG ports and an effective area of 17.0 mm² (Cv 1.0). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
The 4V210-08BG is a 5/2-way single-solenoid directional control valve built on the popular AirTAC 4V200 mid-body platform. It directs compressed air to one side of a double-acting cylinder or rotary actuator while exhausting the opposite side, and a mechanical spring returns the spool to its home position the instant the DC24V electrical signal is removed. This spring-return action makes it the go-to choice for applications where the actuator must default to a safe, known state on power loss.
This particular configuration ships with a DC24V coil drawing just 3.0 W of power and a pre-wired 0.5 m grommet-style flying lead, so you can connect it directly to a standard 24 VDC PLC output without adding a terminal box. The body carries G (BSPP parallel) 1/4-inch cylinder ports and a 1/8-inch exhaust, delivering an effective area of 17.0 mm2 (Cv 1.0). At 220 grams and with a response time of 0.05 seconds or less, it cycles crisply on small-to-mid-bore pneumatic systems.
| Model | Airtac 4V Solenoid Valves 4V210-08BG |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 08BG |
| Exhaust port | 08BG |
| Effective area (Cv) | 17.0 mm² (Cv 1.0) |
| 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 | 5 cycle/sec |
| Response time | ≤ 0.05 s (activating) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Weight | 220 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 | 17.0 mm² |
|---|---|
| Flow coefficient | Cv 1.0 |
| 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. |
| 1 | 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.
Drives a double-acting pusher cylinder on a small conveyor divert station. The spring-return spool retracts the pusher automatically when the 24 VDC signal drops, clearing the line for the next product.
Controls a clamp cylinder on a benchtop assembly fixture. The 3.0 W DC coil runs cool during continuous holding, and the G-thread ports accept clean push-in fittings for a tidy workcell layout.
Operates a small pneumatic slide on a life-sciences test stand. The 0.5 m grommet lead plugs straight into a 24 VDC data-acquisition output, and the 0.05 s response keeps cycle timing tight.
Choose the 4V210-08BG when your control system runs on 24 VDC and you prefer the clean, pre-wired convenience of a grommet entry over a terminal box. The G (BSPP) parallel thread mates with O-ring or bonded-seal fittings common in European-style installations, eliminating the need for thread sealant on the port connections. If your cylinder bore is below 25 mm and cycle speed is modest, stepping down to the 4V100 series (Cv 0.6) can save space; for bores above 50 mm or demanding rapid cycling, the 4V300 (Cv 1.65) provides the extra flow headroom.
When replacing an existing valve, match five points: 4V200 body size, 5/2 single-solenoid function, G1/4 port thread, DC24V coil voltage, and grommet electrical entry. The 4V200 family also supports manifold mounting on a common base, which simplifies plumbing when you are controlling multiple actuators in a compact automation cell.
Quick checklist
With an effective area of 17.0 mm2 (Cv 1.0), this valve suits double-acting cylinders roughly in the Ø32–50 mm range for typical industrial cycle rates. It can drive smaller or larger bores, but cylinder speed will vary with the load and available pressure.
The single solenoid requires a continuous 24 VDC signal to hold the spool in the actuated position. The moment power is removed, the internal spring forces the spool back to its rest state, exhausting the previously pressurized cylinder port. This provides a predictable, fail-safe default position without any external intervention.
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Standard models usually ship in 3-4 days.
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