AirTAC 4V330P-08C Solenoid Valve, 5/3-way, pressure center, PT1/4, AC110V, terminal entry (4V330P08C)
The AirTAC AirTAC 4V330P-08C Solenoid Valve, 5/3-way, pressure center, PT1/4, AC110V, terminal entry (4V330P08C) is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 330P08C 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 size330P08C
- Effective area21.3 mm²
- Flow (Cv)1.25
- Series4V300
About the AirTAC 4V330P-08C Solenoid Valve, 5/3-way, pressure center, PT1/4, AC110V, terminal entry (4V330P08C)
The AirTAC 4V330P-08C is a 5/3-way double-solenoid pneumatic directional valve with a pressure-center spool, designed to command double-acting cylinders and rotary actuators. When both solenoids are de-energised, the spool shifts to its center position where both cylinder ports (A and B) are simultaneously supplied with inlet pressure while the exhaust ports are blocked. This configuration is useful for applications requiring a locked, pressurised state at mid-stroke, such as clamping a part with balanced force or holding a load against a tool without drifting. The valve body is machined from aluminium alloy and operates on filtered, non-lubricated compressed air at 0.15-0.8 MPa.
With an effective area of 21.3 mm² (Cv 1.25) and a maximum cycling rate of 3 cycles per second, this 4V300-series unit suits ~Ø50-80 mm cylinders in moderate-speed circuits. This specific SKU is configured with an AC110V coil drawing 4.5 VA, a terminal-box electrical entry, and Rc (PT) tapered threads on its 1/4-inch ports. The spool responds in 0.05 seconds or less, and the IP65-rated enclosure ensures reliable switching in dusty or washdown environments. A non-locking manual override is fitted as standard for direct actuation during setup.
AirTAC 4V330P-08C Solenoid Valve, 5/3-way, pressure center, PT1/4, AC110V, terminal entry (4V330P08C) Technical Specifications
| Model | AirTAC 4V330P-08C Solenoid Valve, 5/3-way, pressure center, PT1/4, AC110V, terminal entry (4V330P08C) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 330P08C |
| Exhaust port | 330P08C |
| 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 4V330P-08C Solenoid Valve, 5/3-way, pressure center, PT1/4, AC110V, terminal entry (4V330P08C)
| 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. |
| -330P08C | 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 4V330P-08C Solenoid Valve, 5/3-way, pressure center, PT1/4, AC110V, terminal entry (4V330P08C) Is Used
Balanced-Pressure Clamping
The pressure-center spool applies equal inlet pressure to both sides of a double-acting clamp cylinder at rest, holding a workpiece firmly against a fixture without side-load drift during machining or welding operations.
Press & Forming Tools
In small pneumatic presses and forming tools, this valve's 5/3 pressure-center function can maintain a pre-set squeezing force at mid-stroke, allowing the tool to dwell under balanced pressure before retracting.
Material Handling Stops
Controls pneumatic stops and lift-and-carry units on conveyors where a pressurised center position prevents a loaded carriage from creeping, ensuring consistent part placement at each index.
Is the AirTAC 4V330P-08C Solenoid Valve, 5/3-way, pressure center, PT1/4, AC110V, terminal entry (4V330P08C) the Right Valve?
Choose the 4V330P-08C when your circuit needs a 5/3 pressure-center function on a 1/4-inch ported base. The pressure-center spool is distinct from the closed-center (30C) and exhaust-center (30E) variants: it pressurises both cylinder ports at rest, which can be advantageous for high-friction vertical loads that must not sag, provided a pilot-operated check valve is added for true safety-rated holding. For smaller cylinders below Ø40 mm, stepping down to a 4V200-series valve (Cv 1.0) often yields a more compact manifold; for larger bores above Ø80 mm, the 4V400 (Cv 2.82) delivers the higher flow required for acceptable stroking speed.
When replacing an existing valve, match five points exactly: the 4V300 body size, the 5/3 pressure-center function (30P), the 1/4-inch port with PT thread, the AC110V coil voltage, and the terminal-box wiring style. If your manifold uses a different thread standard, select the G (BSPP) or T (NPT) suffix model. A single valve can be mounted on a sub-base, or multiple units can be joined on a common manifold to simplify piping and reduce potential leak points.
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 4V330P-08C Solenoid Valve, 5/3-way, pressure center, PT1/4, AC110V, terminal entry (4V330P08C) FAQ
With an effective area of 21.3 mm² (Cv 1.25), this 4V300-series valve is well matched to double-acting cylinders in the ~Ø50-80 mm range for general industrial stroking speeds. The 5/3 pressure-center design is specifically for applications where both cylinder ports must be pressurised in the center position.
The 4V330P-08C is a double-solenoid valve with a spring-centered spool. If both solenoids are de-energised, the spool returns to the center position where pressure is applied to both cylinder ports (A and B). This creates a balanced force, but it is not a safety-rated load-holding mechanism; for suspended loads, a pilot-operated check valve or mechanical brake must be added.
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