AirTAC 4V330C-08AI Solenoid Valve, 5/3-way, closed center, PT1/4, AC220V, grommet entry (4V330C08AI)
The AirTAC AirTAC 4V330C-08AI Solenoid Valve, 5/3-way, closed center, PT1/4, AC220V, grommet entry (4V330C08AI) is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 330C08AI 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.
- Valve type5/3-way
- Function5/3 double solenoid — Closed center
- Port size330C08AI
- Effective area21.3 mm²
- Flow (Cv)1.25
- Series4V300
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the AirTAC 4V330C-08AI Solenoid Valve, 5/3-way, closed center, PT1/4, AC220V, grommet entry (4V330C08AI)
The AirTAC 4V330C-08AI is a 5/3-way double-solenoid valve that directs compressed air to double-acting cylinders and actuators, with a closed center position that blocks all ports when both solenoids are de-energised. This allows the cylinder to hold its position at mid-stroke—ideal for pressing, clamping, or stopping a load at an intermediate point in a cycle. It belongs to the 4V300 body class, offering an effective area of 21.3 mm² (Cv 1.25) that suits ~O50-80 mm bore cylinders, and carries an AC220V coil drawing 4.5 VA, pre-wired via a 0.5 m grommet-style flying lead for fast DIN-rail installation.
Built on a rugged aluminium-alloy body with a sliding-spool design, the valve operates on filtered (40 µm) compressed air from 0.15-0.8 MPa and responds in 0.05 s or less. The IP65-rated enclosure and B-class insulation make it a dependable choice for industrial environments where mid-stroke holding and reliable AC control are both required.
AirTAC 4V330C-08AI Solenoid Valve, 5/3-way, closed center, PT1/4, AC220V, grommet entry (4V330C08AI) Technical Specifications
| Model | AirTAC 4V330C-08AI Solenoid Valve, 5/3-way, closed center, PT1/4, AC220V, grommet entry (4V330C08AI) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 330C08AI |
| Exhaust port | 330C08AI |
| 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.
Flow & Coil Options
| 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.
Model Code: AirTAC 4V330C-08AI Solenoid Valve, 5/3-way, closed center, PT1/4, AC220V, grommet entry (4V330C08AI)
| 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. |
| -330C08AI | 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.
Where the AirTAC 4V330C-08AI Solenoid Valve, 5/3-way, closed center, PT1/4, AC220V, grommet entry (4V330C08AI) Is Used
Mid-Stroke Clamping Fixtures
Holds a pneumatic clamp at an intermediate position on a machining centre, allowing the tool to access the workpiece without full cylinder retraction.
Press-Brake Stopping
Stops the ram of a small pneumatic press-brake at a precise mid-point, enabling multi-stage forming operations with a single cylinder.
Diveter Gate Control
Positions a diveter gate on a conveyor line to a neutral mid-point, temporarily blocking both lanes during a product-inspection pause.
Is the AirTAC 4V330C-08AI Solenoid Valve, 5/3-way, closed center, PT1/4, AC220V, grommet entry (4V330C08AI) the Right Valve?
Step up to this 4V330C-08AI when your application needs a larger flow than the 4V200 series (Cv1.0) can deliver, but you don't yet require the 4V400's Cv2.82. The closed-center 5/3 function is the right pick when you need to stop a double-acting cylinder mid-travel and hold it against moderate external forces—just remember that for true load-holding safety you should add a pilot-operated check valve at the cylinder ports. If your circuit only needs end-to-end motion, a 5/2 single (4V310) or double (4V320) will be simpler and give you the higher Cv1.65 flow of the 5/2 spool.
When replacing an existing valve, match these five points exactly: body size (4V300), function (5/3 closed-center), port size and thread (1/4in PT), coil voltage (AC220V), and electrical entry (grommet with flying lead). This model can be mounted on a manifold base to build a compact multi-valve station.
Quick checklist
- ✓ Required flow (Cv) for cylinder & speed
- ✓ Function: single / double / 5-3 center
- ✓ Coil voltage (DC24 / AC220 …)
- ✓ Port thread (M5 / 1/8 / 1/4 / 3/8 / 1/2)
- ✓ Single valve or manifold base?
Installation & Wiring Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 0.8 MPa operating pressure.
- check Match coil voltage to your controller output.
- check Use the manual override to test before powering.
- check Fit silencers or fittings to the exhaust ports.
- check Wiring by qualified personnel per AirTAC docs.
AirTAC 4V330C-08AI Solenoid Valve, 5/3-way, closed center, PT1/4, AC220V, grommet entry (4V330C08AI) FAQ
With an effective area of21.3 mm² (Cv1.25), this 5/3 valve is well-matched to double-acting cylinders in the ~O50 to O80 mm bore range. It provides enough flow for smooth, controlled mid-stroke positioning without overspeeding smaller actuators.
If both solenoids lose power, the spool returns to its spring-centred closed position, blocking all cylinder ports. The cylinder will stop and hold its current position, but for suspended or safety-critical loads you must add an external pilot-operated check valve, as the valve's spool alone is not a safety-rated holding device.
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Related AirTAC 4V Valves
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