AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008B-W)
The AirTAC AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008B-W) is a genuine 5/2-way single solenoid (spring return) solenoid valve with W 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.
- Valve type5/2-way
- FunctionSingle solenoid (spring return)
- Port sizeW
- Effective area17.0 mm²
- Flow (Cv)1.0
- Series4V200
About the AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008B-W)
AirTAC 4V21008B-W is the DC24V build of the 4V210-08 single-solenoid valve: a 5/2 spring-return spool valve with 1/4in PT tapered ports that steers compressed air to and from a double-acting cylinder. Energise the coil and the cylinder extends; cut the signal and the internal spring drives the spool back, so the actuator retracts on its own with no holding current - handy wherever you want automatic return on a stop or power loss.
The flow class is 17.0 mm2 effective area, Cv 1.0, with a maximum rate of 5 cycles per second and an activating response of 0.05 s or less - a solid match for double-acting cylinders in the roughly Dia32-50 mm bore range. The DC24V coil draws only 3.0 W and lands on the standard terminal box of the aluminium body; the valve weighs 220 g, carries IP65 (DIN40050) protection, runs on 0.15-0.8 MPa air filtered to 40 um, and needs no lubrication.
AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008B-W) Technical Specifications
| Model | AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008B-W) |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | W |
| Exhaust port | W |
| 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.
Flow & Coil Options
| 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.
Model Code: AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008B-W)
| 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. |
| -W | 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.
Where the AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008B-W) Is Used
Carton push-off on packing lines
A Dia40 mm double-acting cylinder knocking cartons off a roller conveyor at up to 5 cycles per second; Cv 1.0 keeps stroke time short, and the spring return pulls the pusher back the instant the PLC signal drops.
Swing clamps on CNC fixtures
Clamp cylinders in the Dia32-50 mm band give roughly 40-100 kgf of clamping force at 0.5 MPa; with this valve the clamp opens automatically whenever the 24 V signal is cut, and a pilot-operated check valve should be added wherever certified load holding is required.
Diverter gates on filling machines
A compact rotary actuator or slide gate switching product between two chutes on a bottling or granule filler; the 3.0 W DC24V coil draws about 0.13 A, low enough for most PLC transistor outputs without an interposing relay.
Is the AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008B-W) the Right Valve?
Size in both directions: for a small Dia20-25 bore or a slow cycle, the smaller 4V100 body (Cv 0.6) will do the job at lower cost; for Dia63 or larger bores, or noticeably faster travel, step up to the 4V300 (Cv 1.65). Inside the 4V200 range, pick function 10 (this valve) for automatic spring return on signal loss, function 20 (double solenoid, memory) when a short pulse must leave the spool in its last position, or a 30C/E/P 5/3 version when the cylinder must hold, float or be pressurised at center - remember the 5/3 versions flow less (Cv 0.8, 3 cycles per second). Single valves can also be stacked on a manifold base to form a compact multi-valve group.
When replacing an existing valve, match all five points: body size 4V200, function digit (10/20/30C/30E/30P), port and thread (1/4in here, PT/Rc tapered - G and NPT versions exist), coil voltage (DC24V, 3.0 W) and electrical entry (terminal box; a grommet version with a 0.5 m flying lead is ordered as 4V210-08BI).
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 4V210-08 Solenoid Valve, 4V200 Series (4V21008B-W) FAQ
It is a 5/2 spring-return directional valve for double-acting cylinders and pneumatic actuators. The full figure set in one place: effective area 17.0 mm2 (Cv 1.0), response 0.05 s or less, operating pressure 0.15-0.8 MPa with 1.2 MPa proof pressure, maximum frequency 5 cycles per second, DC24V coil power 3.0 W, IP65 protection, weight 220 g. It suits double-acting cylinders of roughly Dia32-50 mm bore.
The solenoid shifts the spool one way only; a built-in spring returns it as soon as the coil is de-energised, so the cylinder reverses without a second signal and without any holding current. That is the opposite of the 4V220 double-solenoid memory valve, which stays in its last pulsed position when power is lost. If a load must never fall, fit a pilot-operated check valve at the cylinder ports or a mechanical brake - never rely on the valve alone.
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