The AirTAC Airtac 4V Solenoid Valves 4V21006E-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 AirTAC 4V210-06E-W is a 5/2-way single-solenoid directional valve in the 4V200 body with 1/8-inch PT tapered ports and an AC24V coil wired through a terminal box. One coil is energised to send air to the cylinder, and the built-in spring snaps the spool back the moment the coil drops out, so the exhaust side vents while the opposite port pressurises - correct behaviour for double-acting cylinders and pneumatic rotary actuators, never single-acting types. Flow sits in the mid-body class at 17.0 mm2 effective area (Cv 1.0) with cycling up to 5 cycles per second. This specific build suits control cabinets that run a 24V AC bus: the coil draws 5.0 VA at AC24V, and the spool-valve design responds in 0.05 s or less. The aluminium-alloy body weighs about 220 g, mounts alone or on an integrated manifold base, and needs no lubrication - only air filtered by a 40 um element.
| Model | Airtac 4V Solenoid Valves 4V21006E-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 compact rack-and-pinion rotary actuator indexing small housings between stations uses 17.0 mm2 (Cv 1.0) flow, and the AC24V coil plugs straight into the machine's 24V control circuit with the spring guaranteeing return to the home position on every stop.
A short-stroke pusher knocking rejected bottle caps off a conveyor cycles several times a second; the 4V200's 5 cycle/sec limit and <= 0.05 s response keep pace, while the spring return parks the pusher clear when the line stops.
A Dia 40 mm swing clamp closes on brackets between welds. The 1/8-inch PT ports suit the short fixture tubing, and if coil power is interrupted the spring opens the clamp so the operator can load the next part.
Size both ways before ordering. Step down to the 4V100 body (Cv 0.6) if your cylinder is below roughly Dia 32 mm and cycle speed is modest; step up to the 4V300 (Cv 1.65) for bores above Dia 50 mm or faster travel. The 4V200's 1/8-inch ports on this SKU are the smaller option - the 4V210-08 with 1/4-inch ports shares the same Cv, so port choice follows your tubing rather than flow. Pick a single solenoid when the machine must return to a defined rest position on power loss; pick a double solenoid (4V220) only if you need position memory. To replace an existing unit, match five points exactly: body size (4V200), function (10), port and thread (1/8 inch, PT), coil voltage (AC24V) and electrical entry (terminal box).
Quick checklist
Effective area 17.0 mm2 (Cv 1.0) in both 5/2 positions, max frequency 5 cycles per second, activating response 0.05 s or less. Operating pressure is 0.15-0.8 MPa with 1.2 MPa proof pressure, working temperature -20 to +70 C, protection IP65 (DIN40050) and insulation class B. The AC24V coil consumes 5.0 VA, the aluminium body weighs about 220 g, and the air must be filtered by a 40 um element with no lubrication required.
No. This is a spring-return valve: the coil must stay energised to keep air flowing to the working port, and the spring moves the spool back as soon as power drops. That default-return behaviour is what most machine builders want for rest-position safety. If you need the valve to remember its last position through a power cut, choose the double-solenoid 4V220 instead.
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