AirTAC 4V330C-08EI Solenoid Valve, 5/3-way, closed center, PT1/4, AC24V, grommet entry (4V330C08EI)
The AirTAC AirTAC 4V330C-08EI Solenoid Valve, 5/3-way, closed center, PT1/4, AC24V, grommet entry (4V330C08EI) is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 330C08EI 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 size330C08EI
- 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-08EI Solenoid Valve, 5/3-way, closed center, PT1/4, AC24V, grommet entry (4V330C08EI)
The 4V330C-08EI is a 5/3-way double-solenoid pneumatic directional valve that precisely controls double-acting cylinders and actuators. Its closed-center spool configuration blocks all ports in the neutral position, holding the cylinder firmly in place when neither solenoid is energized. This model is pre-wired with a 0.5 m flying lead via a DIN-style grommet and operates on a 24V AC coil drawing 5.0 VA.
Built on the 4V300 aluminum body, this valve provides an effective area of 21.3 mm² (Cv 1.25) and suits cylinders in the ~Ø50-80 mm range. The sliding-column design delivers a response time of 0.05 s or less, while the IP65-rated enclosure and locking manual override ensure reliable performance in harsh industrial environments.
AirTAC 4V330C-08EI Solenoid Valve, 5/3-way, closed center, PT1/4, AC24V, grommet entry (4V330C08EI) Technical Specifications
| Model | AirTAC 4V330C-08EI Solenoid Valve, 5/3-way, closed center, PT1/4, AC24V, grommet entry (4V330C08EI) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 330C08EI |
| Exhaust port | 330C08EI |
| 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-08EI Solenoid Valve, 5/3-way, closed center, PT1/4, AC24V, grommet entry (4V330C08EI)
| 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. |
| -330C08EI | 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-08EI Solenoid Valve, 5/3-way, closed center, PT1/4, AC24V, grommet entry (4V330C08EI) Is Used
Clamping & Fixturing
Holds pneumatic clamps and workholding fixtures rigidly at mid-stroke with the closed-center spool, preventing part movement during machining or assembly.
Press & Forming Control
Directs a double-acting press cylinder with a controlled stop at center, allowing precise positioning for forming, stamping, or laminating operations.
Material Stop Gates
Operates a mid-position stop gate on a conveyor line, holding the gate in a fixed position to separate or queue products without drifting.
Is the AirTAC 4V330C-08EI Solenoid Valve, 5/3-way, closed center, PT1/4, AC24V, grommet entry (4V330C08EI) the Right Valve?
Choose the 4V330C-08EI when your application requires a mid-flow 5/3 valve that can hold a load at mid-stroke on power loss. For smaller Ø32-40 mm cylinders, the 4V200 series (Cv 1.0) offers a more compact footprint; for larger Ø100-125 mm bores, step up to the 4V400 (Cv 2.82). The closed center is ideal for clamping or pressing where drift is unacceptable, but remember that a pilot-operated check valve is still required for true suspended-load safety.
This AC24V grommet variant simplifies wiring with its pre-attached flying lead, eliminating the need for a separate connector. When matching a replacement, verify all five points: 4V300 body size, 5/3 closed-center function, 1/4 in PT ports, 24V AC coil voltage, and the grommet electrical entry.
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-08EI Solenoid Valve, 5/3-way, closed center, PT1/4, AC24V, grommet entry (4V330C08EI) FAQ
With an effective area of 21.3 mm² (Cv 1.25), this 5/3 valve is best matched to double-acting cylinders in the ~Ø50-80 mm bore range. It provides sufficient flow for smooth, controlled actuation at speeds up to 3 cycles per second.
If both solenoids are de-energized, the spring-centered spool blocks pressure, exhaust, and both cylinder ports. This traps air in the cylinder, holding the piston in its last position. For critical load-holding, always supplement the valve with an external pilot-operated check valve.
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Related AirTAC 4V Valves
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