AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008BI-W)
The AirTAC AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008BI-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 (4V21008BI-W)
The AirTAC 4V210-08BI-W is a 5/2 single-solenoid directional valve that routes compressed air to the two sides of a double-acting cylinder: energise the coil to shift one way, cut the signal and the internal spring returns the spool, sending the rod back. Its 17.0 mm2 effective area (Cv 1.0) places it in the mid-size 4V200 body class, matched to double-acting cylinders of roughly O32 to O50 mm bore.
This build pairs a DC24V coil drawing just 3.0 W with a grommet entry that arrives pre-wired on a 0.5 m flying lead, so hookup is a two-core connection instead of terminal-block terminations inside a box. The spool moves in 0.05 s or less, the aluminum body weighs 220 g, and the 1/4 in ports are PT (Rc) tapered. Note that AirTAC rates flow by chart, not by a single L/min figure - size with Cv 1.0.
AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008BI-W) Technical Specifications
| Model | AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008BI-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 (4V21008BI-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 (4V21008BI-W) Is Used
Bottling line reject pusher
An O40 mm double-acting cylinder kicks off-spec bottles off the conveyor; Cv 1.0 fills the bore briskly at 0.5 MPa and the 5 cycle/s rating keeps pace with line speed, while the 0.5 m pre-wired lead reaches the low-voltage control cabinet without extra cabling.
CNC fixture swing clamp
On a machining-centre fixture, DC24V pairs directly with the machine's 24 V I/O cards; because the spring returns the spool whenever the signal drops, the double-acting clamp reverts to its rest position after every cycle without a second valve.
Bench press-assist ram
A small assembly-bench ram on an O32-O40 mm bore gets enough flow from Cv 1.0 for steady manual cycling, and the two-hand control can simply be released to spring-retract the ram between parts.
Is the AirTAC 4V210-08 Solenoid Valve, 4V200 Series (4V21008BI-W) the Right Valve?
Step down to the 4V100 body (Cv 0.6) for small O32 mm bores that develop only about 8 kgf push at 0.5 MPa, or up to the 4V300 (Cv 1.65) when an O50 mm bore pushing near 20 kgf needs faster strokes than Cv 1.0 allows. Function-wise, choose the double-solenoid 4V220 if the cylinder must stay put after a pulse, or a 4V230 5/3 type when a centre condition matters. Mount single valves inline, or stack several on a 4V200 manifold base to share one air supply. For a like-for-like replacement, match five points: 4V200 body, function 10, 1/4 in port with PT thread, DC24V coil, and grommet (I) 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 4V210-08 Solenoid Valve, 4V200 Series (4V21008BI-W) FAQ
Flow is Cv 1.0 through a 17.0 mm2 effective area (AirTAC publishes flow as a chart, so there is no single L/min number). Response is 0.05 s or less, operating pressure 0.15-0.8 MPa with 1.2 MPa proof, up to 5 cycles per second, IP65 protection, -20 to +70 C, DC24V coil at 3.0 W, and 220 g valve weight.
Directionally, yes: removing the 24 V signal springs the spool back, so the double-acting cylinder returns predictably to the de-energised side. It only drives double-acting actuators - single-acting ones need a 3/2 valve. For suspended or hazardous loads, add a pilot-operated check valve or mechanical brake; the valve alone is not a certified load-holding device.
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