AirTAC 4V210-08AI Solenoid Valve, 5/2-way, PT1/4, AC220V, grommet entry (4V21008AI)
The AirTAC AirTAC 4V210-08AI Solenoid Valve, 5/2-way, PT1/4, AC220V, grommet entry (4V21008AI) is a genuine 5/2-way single solenoid (spring return) solenoid valve with 21008AI 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 size21008AI
- Effective area17.0 mm²
- Flow (Cv)1.0
- Series4V200
About the AirTAC 4V210-08AI Solenoid Valve, 5/2-way, PT1/4, AC220V, grommet entry (4V21008AI)
The AirTAC 4V210-08AI is a single-solenoid, 5/2-way pneumatic directional valve built on the popular 4V200 body. It directs compressed air to one side of a double-acting cylinder while exhausting the other, and a mechanical spring returns the spool to its home position the moment the coil is de-energised—so a constant AC220V signal is required to hold the shifted state.
This configuration ships with an AC220V coil (4.5 VA inrush) and a grommet-style electrical entry with a 0.5 m flying lead, making wiring straightforward in cabinets where a terminal box is less convenient. With an effective area of 17.0 mm² (Cv 1.0) and a response time ≤ 0.05 s, it suits double-acting cylinders in the ~O32-50 mm range on general automation stations.
AirTAC 4V210-08AI Solenoid Valve, 5/2-way, PT1/4, AC220V, grommet entry (4V21008AI) Technical Specifications
| Model | AirTAC 4V210-08AI Solenoid Valve, 5/2-way, PT1/4, AC220V, grommet entry (4V21008AI) |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 21008AI |
| Exhaust port | 21008AI |
| 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 4V210-08AI Solenoid Valve, 5/2-way, PT1/4, AC220V, grommet entry (4V21008AI)
| 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. |
| -21008AI | 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 4V210-08AI Solenoid Valve, 5/2-way, PT1/4, AC220V, grommet entry (4V21008AI) Is Used
Packaging Pusher Actuation
Drives the extend-retract motion of a double-acting pusher cylinder on a packaging line. The spring-return design ensures the pusher retracts safely when the AC220V signal is cut.
Clamping & Fixturing
Controls a pneumatic clamp on an assembly jig. The 0.05 s response delivers crisp clamping action, and the grommet lead simplifies wiring inside crowded control panels.
General Cylinder Control
A workhorse valve for double-acting cylinders in sorting gates, diverters, and basic linear-motion tasks. The 17.0 mm² effective area provides ample flow for mid-bore cylinders.
Is the AirTAC 4V210-08AI Solenoid Valve, 5/2-way, PT1/4, AC220V, grommet entry (4V21008AI) the Right Valve?
Choose the 4V210-08AI when you need a spring-return 5/2 function with AC line voltage and a pre-wired grommet lead. If your cylinder is smaller (O20-25 mm) and you want to save space, step down to the 4V100 series (Cv 0.6); for larger bores or faster cycle rates above 5 c/s, the 4V300 body (Cv 1.65) is a better match.
When replacing an existing valve, confirm five points: body size (4V200), function (single 5/2), port size and thread (1/4 in, PT tapered), coil voltage (AC220V), and electrical entry (grommet with flying lead). If you plan to gang multiple valves, the 4V200 manifold base accepts this model directly.
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 4V210-08AI Solenoid Valve, 5/2-way, PT1/4, AC220V, grommet entry (4V21008AI) FAQ
With a Cv of 1.0 (effective area 17.0 mm²), it comfortably drives double-acting cylinders in the ~O32-50 mm bore range at typical shop-air pressures. For smaller O20-25 mm cylinders, the 4V100 series (Cv 0.6) is often a more compact choice.
Yes. The 4V210-08AI is a single-solenoid, spring-return valve. The AC220V coil must remain energised to hold the shifted position; when power is removed, the internal spring forces the spool back to its rest state, exhausting the cylinder's previously pressurised port.
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