Airtac 4V200 Solenoid Valve 4V21008FI
The AirTAC Airtac 4V200 Solenoid Valve 4V21008FI is a genuine 5/2-way single solenoid (spring return) solenoid valve with 21008FI 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 size21008FI
- Effective area17.0 mm²
- Flow (Cv)1.0
- Series4V200
About the Airtac 4V200 Solenoid Valve 4V21008FI
The 4V210-08FI is a single-solenoid, 5/2-way pneumatic directional valve built on the proven 4V200 body. It directs compressed air to one side of a double-acting cylinder while exhausting the other, requiring a constant DC12V signal to hold the shifted position. When power is removed, the internal spring returns the spool to its home state, making it a fail-to-home choice for basic extend-retract tasks.
This variant arrives with a grommet-style electrical entry—a 0.5 m flying lead that simplifies wiring into tight terminal boxes. The DC12V coil draws just 2.5 W and the spool responds in 0.05 s or less. With an effective area of 17.0 mm2 (Cv 1.0), it comfortably drives double-acting cylinders in the O32-50 mm bore range on general automation frames.
Airtac 4V200 Solenoid Valve 4V21008FI Technical Specifications
| Model | Airtac 4V200 Solenoid Valve 4V21008FI |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 21008FI |
| Exhaust port | 21008FI |
| 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 4V200 Solenoid Valve 4V21008FI
| 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. |
| -21008FI | 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 4V200 Solenoid Valve 4V21008FI Is Used
Small Conveyor Diverters
Pulse a DC12V signal to swing a diverter gate via a 32-50 mm double-acting cylinder. The spring return ensures the gate resets to the default lane when the signal drops.
Pick-and-Place Z-Axis
Drive the vertical stroke of a light pick-and-place unit. The 0.05 s response and 2.5 W coil suit compact end-of-arm tooling where low power draw and fast actuation matter.
Clamp & Hold Fixtures
Control a pneumatic clamp on an assembly jig. Energise to clamp, de-energise to release—the spring-return gives a predictable release when the operator clears the station.
Is the Airtac 4V200 Solenoid Valve 4V21008FI the Right Valve?
Choose the 4V210-08FI when your control system runs on 12 V DC and you prefer a pre-wired grommet connection over a terminal box. The single-solenoid spring-return action is the standard pick for two-position cycles where the valve must default to a known state at E-stop or power loss. If your cylinder bore is below 25 mm, the smaller 4V100 series (Cv 0.6) may give a softer, more controllable stroke; for bores above 63 mm or for very fast cycle rates, stepping up to the 4V300 (Cv 1.65) reduces back-pressure.
When replacing an existing valve, match five points: the 4V200 body size, the 5/2 single-solenoid function (10), the 1/4-inch PT port, the DC12V coil voltage, and the grommet (I) electrical entry. For multi-valve stations, this body mounts directly onto a 4V200 manifold base, keeping plumbing tidy.
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 4V200 Solenoid Valve 4V21008FI FAQ
With a 17.0 mm2 effective area (Cv 1.0), it suits double-acting cylinders roughly O32 to O50 mm bore in typical 0.4-0.7 MPa circuits. Smaller cylinders may overshoot; larger bores will move more slowly, and a 4V300 valve would be a better match.
It leaves the factory with a 0.5 m flying-lead wire set, not a connector. You wire the stripped leads directly into your control cabinet or attach the DIN connector of your choice. The DC12V coil draws 2.5 W, so a standard 0.5 mm² cable is sufficient.
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