The AirTAC Airtac 4V Solenoid Valves 4V330E10CT-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 4V330E10CT-W is an AirTAC 4V300 body valve with a 5/3-way exhaust-center spool, twin solenoids and the factory -W external-pilot option. In the center position both cylinder ports A and B vent to exhaust, so a double-acting cylinder attached to it floats free and can be repositioned by hand or by an external force - the valve never locks the load. Pilot air arrives through a separate external pilot port rather than being tapped from the main line, which keeps switching dependable on low-pressure mains, vacuum circuits and applications where the supply is deliberately kept below the working range. The AC110V coil draws 4.5 VA and connects through a standard terminal box, and the 3/8-inch working ports are cut NPT thread.
In flow terms this is the mid-large class of the 4V300 family: an effective area of 21.3 mm2 (Cv 1.25), a switching rate of up to 3 cycles per second and a response time of 0.05 s or less. That capacity suits cylinders of roughly O50-80 mm bore. The 5/3 spool trims the flow slightly versus the 5/2 versions, and the body weighs 450 g. Like every 4V300 valve it runs on 0.15-0.8 MPa filtered air, needs no lubrication, carries an IP65 rating and can be stacked into an integrated manifold group on a common base.
| Model | Airtac 4V Solenoid Valves 4V330E10CT-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.
External pilot supply keeps the spool switching cleanly even when the main line runs at reduced pressure or under vacuum, where an internally piloted valve would stall mid-travel.
Exhaust center leaves both cylinder chambers vented, so operators can freely reposition a slide, gauge or fixture between cycles without releasing the air supply.
Conveyor stops and lift-assist cylinders de-pressurise to exhaust when the valve centers, letting the load settle naturally instead of being locked against the spool.
Match this valve to bores around O50-80 mm. Below that, the 4V200 (Cv 1.0) is the more economical step down; above it, move to the 4V400 (Cv 2.82) to keep cylinder speed up. Pick the exhaust center (30E) when the actuator should drift freely at rest - for hand-adjustable slides or vented-on-stop circuits - while the 30C closed center holds position and the 30P pressure center equalises both sides. Choose the -W external-pilot build whenever main-line pressure dips, pulses or sits near vacuum, because the pilot signal then comes from an independent source instead of the supply line.
For a like-for-like replacement, match all five points: 4V300 body size, 30E function, 3/8-inch NPT ports with the -W external pilot, AC110V coil voltage, and terminal-box electrical entry. A single valve mounts directly; a manifold base groups several valves into one tidy supply block.
Quick checklist
It switches double-acting cylinders and actuators only - a 5/3 valve pressurises one chamber while exhausting the other, so single-acting cylinders are not its job. Flow is Cv 1.25 (effective area 21.3 mm2), which suits bores of roughly O50-80 mm, with switching up to 3 cycles per second and a response time of 0.05 s or less.
The -W option feeds pilot air from a dedicated external port instead of the main supply, so the valve still shifts reliably when line pressure is low or the circuit runs under vacuum. The AC110V coil (4.5 VA) suits plants wired for 110 V AC control, and power enters through the terminal box. To swap one in, match the 4V300 body, 30E exhaust-center function, 3/8-inch NPT ports, coil voltage and entry style.
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