AirTAC 4V330C-08CI Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, grommet entry (4V330C08CI)
The AirTAC AirTAC 4V330C-08CI Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, grommet entry (4V330C08CI) is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 330C08CI 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 size330C08CI
- 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-08CI Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, grommet entry (4V330C08CI)
The AirTAC 4V330C-08CI is a 5/3-way double-solenoid pneumatic directional valve built on the 4V300 body platform. When both coils are de-energised, the spool springs to its center position where all five ports are blocked, effectively locking a double-acting cylinder in place mid-stroke. This closed-center configuration is ideal for applications that require an intermediate stop without drifting, though a pilot-operated check valve should be added for true load-holding safety.
This specific model comes pre-wired with a 0.5 m flying lead via a DIN-style grommet entry and operates on an AC110V coil drawing 4.5 VA. With an effective area of 21.3 mm² (Cv 1.25) and a maximum cycling speed of 3 cycles per second, it suits pneumatic systems driving cylinders in the O50 to O80 mm bore range. The aluminum-alloy body weighs 450 g and carries an IP65 protection rating.
AirTAC 4V330C-08CI Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, grommet entry (4V330C08CI) Technical Specifications
| Model | AirTAC 4V330C-08CI Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, grommet entry (4V330C08CI) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 330C08CI |
| Exhaust port | 330C08CI |
| 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-08CI Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, grommet entry (4V330C08CI)
| 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. |
| -330C08CI | 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-08CI Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, grommet entry (4V330C08CI) Is Used
Intermediate Stop Fixtures
In assembly jigs where a clamp cylinder must pause at a precise mid-point before final advance, the closed-center spool holds the piston in place, preventing drift while a secondary operation completes.
Vertical Lift & Park
On a material lift table, this valve stops and holds the platform at an intermediate level. Combined with an external pilot-operated check valve, it provides a secure hold for suspended loads during loading and unloading cycles.
Press & Forming Safety Circuits
In a pneumatic press, the 4V330C-08CI can halt the ram mid-descent for part alignment. The blocked-center condition ensures the tooling does not creep, protecting both the part and the operator during setup.
Is the AirTAC 4V330C-08CI Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, grommet entry (4V330C08CI) the Right Valve?
Choose the 4V330C-08CI when your circuit needs a 5/3 closed-center function on a 1/4-inch PT-ported valve. The 4V300 body sits between the smaller 4V200 (Cv 1.0) and the larger 4V400 (Cv 2.82), making it the right choice for mid-bore cylinders where the 4V200 would be undersized. For a 3/8-inch port, step up to the -10 variant; if you need the cylinder to float freely at center rather than hold position, select the 4V330E exhaust-center model instead.
To ensure a drop-in replacement, match five points: confirm the body size is 4V300, the function is 5/3 closed-center (30C), the port size and thread (1/4in PT), the coil voltage (AC110V), and the electrical entry (grommet with flying lead). This valve can be mounted individually or ganged on a manifold base for multi-station control.
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-08CI Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, grommet entry (4V330C08CI) FAQ
With a Cv of 1.25 and an effective area of 21.3 mm², this 5/3 valve is well-matched to double-acting cylinders with bores approximately between 50 and 80 mm. It provides sufficient flow for smooth, controlled actuation in this mid-bore range without being oversized.
The 4V330C-08CI is a double-solenoid valve. When both solenoids are de-energised, internal springs center the spool, blocking the pressure, exhaust, and both cylinder ports. This traps air on both sides of the piston, holding the cylinder in its last position. For critical load-holding, always supplement the valve with a mechanical brake or pilot-operated check valves.
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Related AirTAC 4V Valves
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