AirTAC 4V330C-08C Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, terminal entry (4V330C08C)
The AirTAC AirTAC 4V330C-08C Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, terminal entry (4V330C08C) is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 330C08C 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 size330C08C
- 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-08C Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, terminal entry (4V330C08C)
The AirTAC 4V330C-08C 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 configuration holds the cylinder piston in place at mid-stroke, making it the go-to choice for applications where the load must be stopped and held at an intermediate point without drifting. Built on the 4V300 body, it delivers an effective area of 21.3 mm² (Cv 1.25) and typically suits cylinders in the Ø50–80 mm range.
This specific model is configured with 1/4-inch PT (Rc) tapered-thread ports, a terminal-style electrical entry, and a 110 V AC coil drawing 4.5 VA. The valve’s spool-and-sleeve design responds in 0.05 seconds or less, operates on filtered, non-lubricated air from 0.15–0.8 MPa, and carries an IP65 protection rating. For any scenario requiring a guaranteed mechanical lock, pair this valve with a pilot-operated check valve at the cylinder ports.
AirTAC 4V330C-08C Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, terminal entry (4V330C08C) Technical Specifications
| Model | AirTAC 4V330C-08C Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, terminal entry (4V330C08C) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 330C08C |
| Exhaust port | 330C08C |
| 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-08C Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, terminal entry (4V330C08C)
| 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. |
| -330C08C | 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-08C Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, terminal entry (4V330C08C) Is Used
Mid-Cycle Clamping
The closed center spool blocks cylinder ports at rest, holding a pneumatic clamp or press tool in a precise intermediate position for secondary operations like welding or gluing.
Vertical Lift & Park
On a material lift or stacker, the 4V330C-08C stops and holds the carriage mid-stroke without drifting, preventing the load from creeping downward during a pause in the cycle.
Machine Tool Interlock
Used in a machine-tool safety gate or shuttle table, the valve blocks air to the drive cylinder when the guard is open, ensuring the actuator cannot move until the system is re-energised.
Is the AirTAC 4V330C-08C Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, terminal entry (4V330C08C) the Right Valve?
Choose the 4V330C-08C when your pneumatic circuit needs a 5/3 closed-center function on a 1/4-inch ported base. The 4V300 body sits in the middle of the AirTAC range: step down to a 4V200 (Cv ~1.0) for smaller Ø32–40 mm cylinders, or move up to a 4V400 (Cv ~2.82) for bores above Ø100 mm. A 5/3 closed center is ideal for stopping a load mid-cycle, but if you only need end-to-end motion, a 5/2 single (spring-return) or double (memory) valve may be simpler and offers a higher Cv of 1.65 on this same body.
When replacing an existing valve, match all five points: body size (4V300), function (5/3 closed-center), port size and thread (1/4-inch PT), coil voltage (AC110V), and electrical entry (terminal box). The 4V300 series also supports manifold mounting—order a sub-base to gang multiple valves into one clean assembly.
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-08C Solenoid Valve, 5/3-way, closed center, PT1/4, AC110V, terminal entry (4V330C08C) FAQ
With an effective area of 21.3 mm² (Cv 1.25), this 5/3 valve suits double-acting cylinders roughly in the Ø50–80 mm bore range for typical industrial cycle rates. For smaller Ø32–40 mm cylinders a 4V200 body is more economical; for larger Ø100 mm+ bores step up to the 4V400 series for faster fill times.
No—the closed center blocks the ports and resists drift from balanced pressure, but it is not a failsafe mechanical lock. If your application involves a suspended or vertical load where unintended movement could create a hazard, you must add a pilot-operated check valve or a mechanical brake at the cylinder. The valve alone does not provide guaranteed load-holding for safety-critical situations.
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Related AirTAC 4V Valves
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