The AirTAC Airtac 4V Solenoid Valves 4V210-08BT is a genuine 5/2-way single solenoid (spring return) solenoid valve with 08BT 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 AirTAC 4V210-08BT is a 5/2-way single-solenoid directional control valve built on the 4V200 body, directing compressed air to double-acting cylinders and rotary actuators. This NPT-threaded model requires a continuous DC24V signal to hold the shifted position; de-energising the coil immediately springs the spool back to its home state, making it a predictable choice for basic extend-retract sequences where a fail-return is desired.
With an effective area of 17.0 mm2 (Cv 1.0) and a response time of 0.05 s or less, it suits ~O32-50 mm bore cylinders running at typical industrial speeds. The terminal-box entry keeps wiring tidy, and the 3.0 W DC coil runs cool for continuous-duty applications. At 220 g, it is light enough to mount directly on a cylinder or a manifold base without extra bracketry.
| Model | Airtac 4V Solenoid Valves 4V210-08BT |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 08BT |
| Exhaust port | 08BT |
| 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. |
| -08BT | 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 that diverts cartons off a belt. Spring return ensures the pusher retracts on power loss, preventing a lane blockage.
Controls a clamping cylinder in a fixture. The DC24V coil and NPT ports fit standard North American panels, and the 0.05 s response keeps tact time low.
A workhorse valve for any double-acting cylinder in the O32-50 mm range—sorting gates, press feeds, or packaging tuckers—where a simple spring-return 5/2 is sufficient.
Choose this 4V210-08BT when you need a spring-return 5/2 with NPT ports and a DC24V coil—common in North American machine builds. If your cylinder is below O25 mm, the smaller 4V100 body (Cv 0.6) may give finer control; for bores above O63 mm or when you need faster cycle rates, step up to the 4V300 series (Cv 1.65).
For replacement, match five points: body size (4V200), function (single solenoid 5/2), port and thread (1/4 NPT), coil voltage (DC24V), and electrical entry (terminal box). The 4V200 platform also supports manifold mounting—order a base and gasket kit to gang multiple valves with a common supply and exhaust.
Quick checklist
With a Cv of 1.0 and an effective area of 17.0 mm2, it pairs well with double-acting cylinders in the ~O32-50 mm bore range. It can drive larger bores, but cycle speed will drop; for O63 mm and above, consider the 4V300 series (Cv 1.65).
No—the 4V210 is a single-solenoid, spring-return design. It requires a constant DC24V signal to stay shifted. When power is removed, the internal spring pushes the spool back to the home port position, exhausting the previously pressurised cylinder side.
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