AirTAC 4V330C-08FI Solenoid Valve, 5/3-way, closed center, PT1/4, DC12V, grommet entry (4V330C08FI)
The AirTAC AirTAC 4V330C-08FI Solenoid Valve, 5/3-way, closed center, PT1/4, DC12V, grommet entry (4V330C08FI) is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 330C08FI 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 size330C08FI
- 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-08FI Solenoid Valve, 5/3-way, closed center, PT1/4, DC12V, grommet entry (4V330C08FI)
The AirTAC 4V330C-08FI is a 5/3-way double-solenoid pneumatic directional valve that controls double-acting cylinders and actuators, delivering a closed-center spool position. When both solenoids are de-energised, all ports are blocked, which holds the cylinder in place mid-stroke—ideal for applications where the load must not drift during a power interruption or an emergency stop. This DC12V variant ships with a grommet-style electrical entry, providing a 0.5 m pre-wired flying lead that simplifies DIN-rail wiring and speeds up panel installation.
Built on the 4V300 aluminium body, this valve provides an effective area of 21.3 mm² (Cv 1.25) and suits ~Ø50-80 mm double-acting cylinders. It operates at up to 3 cycles per second with a response time of 0.05 s or below. The DC12V coil draws just 2.5 W, keeping control-panel heat low, and the IP65-rated enclosure ensures reliable switching in dusty or washdown environments.
AirTAC 4V330C-08FI Solenoid Valve, 5/3-way, closed center, PT1/4, DC12V, grommet entry (4V330C08FI) Technical Specifications
| Model | AirTAC 4V330C-08FI Solenoid Valve, 5/3-way, closed center, PT1/4, DC12V, grommet entry (4V330C08FI) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 330C08FI |
| Exhaust port | 330C08FI |
| 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-08FI Solenoid Valve, 5/3-way, closed center, PT1/4, DC12V, grommet entry (4V330C08FI)
| 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. |
| -330C08FI | 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-08FI Solenoid Valve, 5/3-way, closed center, PT1/4, DC12V, grommet entry (4V330C08FI) Is Used
Mid-Stroke Clamping & Fixturing
In CNC workholding and welding fixtures, the closed center blocks all ports to lock a clamp cylinder in position during machining, preventing part movement if air pressure fluctuates.
Stop-and-Hold Vertical Gates
Controls a vertical gate cylinder on a conveyor diverter. The closed center holds the gate at an intermediate height, stopping product flow without drifting, even when the E-stop is pressed.
Laboratory Press Control
Operates a double-acting press cylinder in a lab setting where a 12 V DC supply is standard. The 5/3 closed center holds the platen at a set pressure point for consistent sample preparation.
Is the AirTAC 4V330C-08FI Solenoid Valve, 5/3-way, closed center, PT1/4, DC12V, grommet entry (4V330C08FI) the Right Valve?
Choose the 4V330C-08FI when your application requires a 1/4in ported 5/3 closed-center valve that can stop and hold a double-acting cylinder at mid-position without air consumption. If your cylinder is smaller than Ø50 mm, consider stepping down to a 4V200-series valve (Cv ~1.0) for finer control; for bores above Ø80 mm, a 4V400 (Cv 2.82) will fill the volume faster. This DC12V grommet model is particularly suited for mobile or low-voltage control systems where a pre-wired flying lead eliminates the need for a separate terminal box connector.
When replacing an existing valve, match all five points: 4V300 body size, 5/3 closed-center function, 1/4in PT thread, DC12V coil voltage, and the grommet electrical entry. The valve can be mounted singly or on a common manifold base, and the manual override button allows you to cycle the spool during commissioning without energising the coil.
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-08FI Solenoid Valve, 5/3-way, closed center, PT1/4, DC12V, grommet entry (4V330C08FI) FAQ
With an effective area of 21.3 mm² (Cv 1.25), this 5/3 valve is well-matched to double-acting cylinders in the Ø50-80 mm range. It prioritises precise mid-stroke holding over raw speed, making it ideal for clamping and positioning tasks.
When both solenoids are de-energised, the spool moves to the spring-centered closed position, blocking the pressure, exhaust, and both cylinder ports. This traps air in the cylinder, holding the actuator in place. For suspended loads, always add a pilot-operated check valve as a safety backup.
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Related AirTAC 4V Valves
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