AirTAC 4V210-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V21008BI)
The AirTAC AirTAC 4V210-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V21008BI) is a genuine 5/2-way single solenoid (spring return) solenoid valve with 21008BI 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 size21008BI
- Effective area17.0 mm²
- Flow (Cv)1.0
- Series4V200
About the AirTAC 4V210-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V21008BI)
The AirTAC 4V210-08BI is a 5/2-way single-solenoid directional control valve built on the popular 4V200 body. It directs compressed air to double-acting cylinders and actuators, energising to shift the spool and returning via a mechanical spring when the DC24V signal is removed—this spring-return action makes it a safe default for applications that must exhaust or retract on power loss.
This specific configuration comes with a grommet-style electrical entry (a 0.5 m pre-wired flying lead) and a 3.0 W DC24V coil, simplifying wiring into tight machine envelopes. 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 double-acting cylinders running at up to 5 cycles per second.
AirTAC 4V210-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V21008BI) Technical Specifications
| Model | AirTAC 4V210-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V21008BI) |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 21008BI |
| Exhaust port | 21008BI |
| 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 4V210-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V21008BI)
| 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. |
| -21008BI | 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 4V210-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V21008BI) Is Used
Compact Assembly Stations
The 4V210-08BI’s grommet lead and 220 g body fit neatly onto a manifold base inside small assembly cells, controlling double-acting clamps and pushers with a clean DC24V signal.
Packaging Line Diverters
Use this spring-return 5/2 to drive a diverter gate cylinder. The valve exhausts the cylinder on power loss, so the gate reliably returns to a safe home position without holding current.
General Machine Actuation
A workhorse for factory automation, the 4V210-08BI cycles ejectors, lifts, and slide units. The 0.05 s response and 5 c/s max frequency keep pace with moderate-speed indexing machines.
Is the AirTAC 4V210-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V21008BI) the Right Valve?
Choose the 4V210-08BI when you need a mid-flow 5/2 spring-return valve with a pre-wired DC24V connection. The grommet entry saves panel space and eliminates a separate terminal-box connector, making it ideal for machines where the valve mounts directly on a cylinder or manifold base with limited clearance.
For a smaller cylinder (O20-25 mm), the 4V100 series (Cv 0.6) may offer a more compact footprint; for larger bores or faster stroke rates, step up to the 4V300 (Cv 1.65). When replacing an existing valve, match these five points: 4V200 body size, 5/2 single-solenoid function (10), 1/4-inch PT port, DC24V coil, and grommet electrical entry.
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 4V210-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V21008BI) FAQ
With a Cv of 1.0 and 17.0 mm² effective area, this 4V200-body valve comfortably drives double-acting cylinders in the ~O32-50 mm range. For a specific speed calculation, provide your bore, stroke, and operating pressure to our application team.
The ‘I’ suffix gives you a 0.5 m flying lead exiting through a rubber grommet instead of a terminal box. It saves wiring time on the machine and reduces the overall height profile, which is useful when the valve is mounted in a space-constrained manifold station.
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Related AirTAC 4V Valves
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