The AirTAC Airtac 4V Solenoid Valves 4V21006AG-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.
The 4V21006AG-W is a 4V200-series single-solenoid 5/2 directional valve built for 1/8in G (BSPP parallel) pipework and an AC220V supply, with the coil rated at 4.5 VA and wired through a terminal box. It routes compressed air to a double-acting cylinder or actuator: energise the coil and the spool shifts to pressurise one port while exhausting the other, cut the signal and the return spring snaps the spool back, so the cylinder strokes only while the electrical signal stays on. In this 4V200 body the spool offers a 17.0 mm2 effective area (Cv 1.0) and cycles up to 5 times per second, with the spool responding in 0.05 s or less after the coil is energised - quick enough for short-stroke pick-and-place work. The 220 g aluminium-alloy valve runs on 0.15-0.8 MPa of air filtered by a 40 um element, needs no lubrication, carries an IP65 (DIN40050) terminal box, includes a manual override for setup, and can be stacked on a manifold base with other 4V200 valves. This spring-return valve suits cylinders of roughly Dia32-50 mm bore.
| Model | Airtac 4V Solenoid Valves 4V21006AG-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.
| 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.
| 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.
A Dia40 mm clamp cylinder swings closed on a machined hub before the cut starts. The Cv 1.0 spool fills the clamp side in well under the 0.05 s response window, and the spring return guarantees the clamp opens the moment the PLC signal drops.
A Dia50 mm bore cylinder sweeps filled cartons off a cross conveyor at up to 5 strokes per second. The 1/8in G ports suit the short hose runs typical of packaging frames, and no lubricator is needed in the air line.
A Dia32 mm raise/lower cylinder lifts a PCBA pallet to a camera station. AC220V at 4.5 VA connects straight to standard control-panel terminals, and the IP65 housing copes with washdown splashes around the fixture.
Size down to the 4V100 (Cv 0.6) when the valve feeds a compact actuator, for example a small gripper cylinder on a Dia25 mm rotary feeder, where the extra flow of the 4V200 would be wasted. Step up to the 4V300 (Cv 1.65) if you move to a Dia63 mm bore or need visibly faster extension and retraction than this valve's 5 cycle/s ceiling allows. For the air logic itself: pick a single solenoid (this type) when the actuator must spring back on signal loss; a double solenoid 5/2 (4V220) when the position must be remembered through a power cut; a 5/3 centre version when a mid-stroke stop is required. One valve on individual fittings or a shared manifold base - the choice comes down to cabinet space and how often you replace valves. Replacing an existing unit: match five points - body family (4V200), function digit (10 here), port size and thread (1/8in, G parallel), coil voltage (AC220V) and electrical entry (terminal box).
Quick checklist
The spool gives a 17.0 mm2 effective area, equal to Cv 1.0, cycling up to 5 times per second with a response of 0.05 s or less. It runs on 0.15-0.8 MPa (proof pressure 1.2 MPa) of air filtered by a 40 um element and suits double-acting cylinders of roughly Dia32-50 mm bore. The coil draws 4.5 VA from an AC220V supply through an IP65 terminal box, and the whole valve weighs 220 g.
This is a single-solenoid valve: the spool stays in the working position only while the coil is energised, and the built-in spring pushes it back as soon as power is cut, retracting the double-acting cylinder automatically. That makes it the right choice wherever the machine must return to a safe home position on any signal loss. The 1/8in G designation means BSPP parallel ports, so it mates with standard G-series fittings and is a direct replacement for any 4V200-body, function-10, G-thread, AC220V terminal-entry valve.
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