The AirTAC Airtac 4V Solenoid Valves 4V330C10AG-W is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with W ports and an effective area of 21.3 mm² (Cv 1.25). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
The 4V330C10AG-W is a 5/3-way closed-center double-solenoid valve from AirTAC's 4V300 family, built with G (BSPP parallel) 3/8" ports and wired for AC220V through a conventional terminal box. Because the -W suffix marks the external-pilot version, the pilot spool is fed from its own dedicated pilot port rather than tapped off the main supply, which keeps switching dependable on low-pressure mains and in vacuum or depressed-pressure circuits where an internally piloted valve would stall. In the center position all five ports shut off, so a connected double-acting cylinder parks exactly where it stopped.
Sized in the 21.3 mm2 / Cv 1.25 flow class, this 450 g aluminium-body valve suits roughly O50-80 mm bores and cycles up to 3 times per second, with an activating response of 0.05 s or better. The 4.5 VA AC220V coil runs lubrication-free on air filtered to 40 um, carries an IP65 (DIN40050) terminal box, and the spool can be banked onto a manifold base with neighbouring stations.
| Model | Airtac 4V Solenoid Valves 4V330C10AG-W |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | W |
| Exhaust port | W |
| Effective area (Cv) | 21.3 mm² (Cv 1.25) |
| 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 | 3 cycle/sec |
| Response time | ≤ 0.05 s (activating) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Weight | 450 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 | 21.3 mm² |
|---|---|
| Flow coefficient | Cv 1.25 |
| 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. |
| 3 | 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.
Closed-center blocking freezes a clamp cylinder in place while the operator indexes the workpiece - Cv 1.25 moves O50-80 mm clamp bores briskly, and the external pilot keeps the clamp switching even if the main line sags.
A 5/3 closed center lets a small press or forming ram dwell at a set depth between cycles; the 0.05 s response tightens repeatability, and low-pressure pilot feed via the -W port avoids stalled strokes on soft supply.
Mounted on a shared base beside sister stations, the AC220V terminal-box valve integrates cleanly into a machine cabinet's wiring, controlling double-acting handling actuators on G-thread 3/8" drop lines.
Choose this 4V300 body when your bore sits in the O50-80 mm band; drop to the 4V200 (Cv 1.0) for smaller cylinders and move up to the 4V400 (Cv 2.82) when a larger bore starves at Cv 1.25. Pick closed center when the actuator must pause mid-stroke; pick exhaust center (30E) for a free-floating load or pressure center (30P) to bias both cylinder sides. Order a single valve with its own base, or group several onto one manifold for compact piping.
Replacing an existing unit? Match all five points: 4V300 body size, 5/3 closed function (30C), 3/8" G-thread ports, AC220V coil, and terminal entry - then confirm the -W external-pilot option, since it changes the plumbing. For suspended or fall-hazard loads, note that closed-center spool sealing alone is not a certified brake; add a pilot-operated check valve at the cylinder ports or a mechanical brake.
Quick checklist
It directs compressed air to double-acting cylinders and actuators in the ~O50-80 mm bore range, offering a 21.3 mm2 effective area (Cv 1.25) and up to 3 cycles per second. The -W external-pilot option feeds the pilot spool from a separate port instead of the main supply, so the valve switches reliably on low-pressure or vacuum-prone mains where an internally piloted valve might fail to shift.
In center, the closed-center spool blocks supply, both cylinder ports and exhaust, so a double-acting cylinder stops where it was. The hold is positional, not a certified safety function - for suspended or fall-protection loads, install a pilot-operated check valve at the cylinder ports or a mechanical brake alongside the valve.
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