The AirTAC Airtac 4V Solenoid Valves 4V32010A-W is a genuine 5/2-way double solenoid (memory) solenoid valve with W ports and an effective area of 28.0 mm² (Cv 1.65). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
The AirTAC 4V32010A-W is a 5/2-way double-solenoid directional valve with a memory function: the spool stays in whichever position it was last pulsed to, held by land friction and balanced pressure, so no holding current is needed and the valve is not magnetically latched. It switches air to double-acting cylinders and actuators, delivering an effective area of 28 mm2 (Cv 1.65) with a maximum cycling rate of 4 cycles per second - a good match for bores around O50-80 mm. The -W suffix marks the external-pilot build: pilot air enters through its own separate port rather than being tapped from the main line, which keeps switching dependable when main-line pressure runs low or in vacuum and low-pressure circuits.
This version is wired for AC220V through a terminal box, drawing just 4.5 VA at the coil, and carries 3/8" PT tapered ports. Inside the 4V300 body you get an aluminum-alloy spool valve rated 0.15-0.8 MPa, activating in 0.05 s or less, IP65 protected and lubrication-free at 400 g. Note that the memory hold is positional, not a certified brake: for suspended loads, back it up with pilot-operated check valves or a mechanical brake.
| Model | Airtac 4V Solenoid Valves 4V32010A-W |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Double solenoid (memory) |
| Port size | W |
| Exhaust port | W |
| Effective area (Cv) | 28.0 mm² (Cv 1.65) |
| 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 | 4 cycle/sec |
| Response time | ≤ 0.05 s (activating) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Weight | 400 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 | 28.0 mm² |
|---|---|
| Flow coefficient | Cv 1.65 |
| 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. |
|---|---|
| 3 | Body size (4V300) — sets port & flow. |
| 2 | 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: 4V310 (single), 4V320 (double), 4V330C/E/P (5/3 center). Add the voltage suffix when ordering.
Because pilot air comes from an external port instead of the main line, this valve still shifts cleanly on installations where supply pressure sags or the circuit runs near vacuum - places an internally piloted valve can stick or fail to switch.
On conveyor stop-and-lift pushers and transfer cylinders in the O50-80 mm class, the memory action keeps the arm in its last commanded direction through a brief power dip, avoiding mid-shift resets.
The Cv 1.65 flow path and 0.05 s activation suit faster stroking of double-acting clamps and tool-feed actuators where a 3/8" supply keeps pressure drop down.
Size first: if your cylinder is under roughly O50 mm or cycle speed matters more than flow, the 4V200 at Cv 1.0 is the leaner pick; step up to the 4V400 (Cv 2.82) once bores pass about O80 mm. Within this series, function 20 (this valve) suits two-wire momentary-signal control where the actuator should not retreat on power loss; function 10 spring-return valves revert on de-energising, and 5/3 variants (Cv 1.25, 3 c/s) add a defined center condition. External pilot, as on this -W model, is the right call when supply pressure fluctuates or the circuit runs below normal line pressure. Single bodies bolt onto a manifold base when several valves share one supply. Ordering a replacement? Match five points: 4V300 body, function 20, 3/8" PT thread, AC220V coil, terminal entry, plus the external-pilot flag.
Quick checklist
On a standard internally piloted valve, pilot pressure is tapped from the main supply, so a low or vacuum main line can leave the spool unable to shift. The 4V32010A-W feeds its pilot from a separate external port, giving reliable switching in low-pressure and vacuum circuits. Everything else matches the base model: 5/2 double-solenoid memory, 28 mm2 effective area (Cv 1.65), AC220V 4.5 VA coil and 3/8" PT ports.
Yes - as a double-solenoid memory valve it keeps its last pulsed position with no holding current, so the cylinder ports stay as commanded during a power loss. That is position retention, not a certified safety function: for suspended or fall-prone loads, add pilot-operated check valves at the cylinder ports or a dedicated mechanical brake.
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