AirTAC 4V210-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V21008CI)
The AirTAC AirTAC 4V210-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V21008CI) is a genuine 5/2-way single solenoid (spring return) solenoid valve with 21008CI 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 size21008CI
- Effective area17.0 mm²
- Flow (Cv)1.0
- Series4V200
About the AirTAC 4V210-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V21008CI)
The 4V210-08CI is a single-solenoid, spring-return 5/2-way pneumatic directional valve from the AirTAC 4V200 series, pre-wired with a DIN-style grommet and 0.5 m flying lead for direct AC110V connection. It directs compressed air to one side of a double-acting cylinder while exhausting the other; the internal spring returns the spool to its home position the moment the coil is de-energised, making it ideal for applications where the actuator must default to a known safe state on power loss.
Built on the 17.0 mm2 effective area (Cv 1.0) 4V200 body, this valve suits ~O32-50 mm bore cylinders in general automation. The AC110V coil draws 4.5 VA inrush, and the spool shifts in 0.05 s or less. With an IP65-rated enclosure and a 220 g aluminium body, it can be mounted individually or ganged on a manifold base for compact multi-valve stations.
AirTAC 4V210-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V21008CI) Technical Specifications
| Model | AirTAC 4V210-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V21008CI) |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 21008CI |
| Exhaust port | 21008CI |
| 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 4V210-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V21008CI)
| 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. |
| -21008CI | 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 4V210-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V21008CI) Is Used
Packaging Pusher Return
Drives a double-acting pusher cylinder on a carton conveyor. The spring-return design guarantees the pusher retracts clear of the line when the AC110V signal drops, preventing jams during an E-stop event.
Clamp & Fixture Actuation
Controls a pneumatic clamp on an assembly jig. The single-solenoid, spring-return action ensures the clamp opens and releases the part automatically when the operator releases the cycle-start button.
Divert Gate Control
Operates a divert gate on a material-handling chute. The grommet-style flying lead simplifies wiring inside a tight machine frame, and the 4.5 VA AC110V coil works directly with common factory control voltage.
Is the AirTAC 4V210-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V21008CI) the Right Valve?
Choose the 4V200 body when your double-acting cylinder falls in the O32-50 mm range and you need the Cv 1.0 flow class. If you are cycling a smaller O20-25 mm bore, stepping down to the 4V100 (Cv 0.6) often yields a more responsive and economical solution; for a larger O63 mm or faster cycle times, the 4V300 (Cv 1.65) provides the extra conductance. The single-solenoid 4V210 configuration is the default choice when the actuator must automatically return to a rest position on power-off or E-stop—no pilot air logic is needed to achieve the fail-safe state.
This 4V210-08CI variant brings AC110V power through a grommet-style entry, eliminating the need for a separate conduit connector at the valve. When replacing an existing valve, match five points: 4V200 body size, 5/2 single-solenoid function, 1/4 inch PT port, 110 V AC coil, and grommet electrical entry. For DC control systems, the 4V210-08B or 4V210-08BI are the direct DC24V equivalents.
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 4V210-08CI Solenoid Valve, 5/2-way, PT1/4, AC110V, grommet entry (4V21008CI) FAQ
With an effective area of 17.0 mm2 (Cv 1.0), it is well-matched to double-acting cylinders in the O32-50 mm bore range for general automation speeds. It can physically shift larger cylinders, but cycle time will increase. For a small O20 mm cylinder, a 4V100-series valve (Cv 0.6) often provides crisper response.
Yes. The single-solenoid 4V210 requires the coil to remain energised for the entire duration the valve is in its shifted position. When the AC110V signal is removed, the mechanical spring immediately returns the spool to the home position. This is intentional for fail-safe retract or release functions.
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