AirTAC 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08BG-W)
The AirTAC AirTAC 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08BG-W) is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with W 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 sizeW
- 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-08 Solenoid Valve, 4V300 Series (4V330C08BG-W)
The AirTAC 4V330C08BG-W is a 5/3-way double-solenoid directional valve with closed center, built on the 4V300 body and delivered with a G1/4 (BSPP parallel) port, a DC24V coil drawing 3.0 W and a standard terminal-box entry. The -W suffix marks the external-pilot build: pilot air is fed through its own separate port rather than being tapped internally from the main supply, so the spool still shifts cleanly when main-line pressure is low or the circuit runs under vacuum. At center, all ports are blocked, which freezes a double-acting cylinder exactly where it stands.
Flow sits in the 21.3 mm2 (Cv 1.25) class, matching bores in the ~O50-80 mm range. Actuation time is 0.05 s or below, the maximum switching rate is 3 cycles per second, and the assembled valve weighs 450 g. The aluminum-alloy body carries IP65 protection, and the air must be filtered by a 40 um element; lubrication is not required.
AirTAC 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08BG-W) Technical Specifications
| Model | AirTAC 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08BG-W) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | W |
| Exhaust port | W |
| 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-08 Solenoid Valve, 4V300 Series (4V330C08BG-W)
| 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. |
| -W | 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-08 Solenoid Valve, 4V300 Series (4V330C08BG-W) Is Used
Mid-Stroke Clamping and Pressing
Closed-center blocking pins a double-acting clamp or press cylinder in place between pulses, holding the workpiece while the machine completes its cycle.
Low-Pressure and Vacuum Circuits
The external-pilot -W feed keeps shifting dependable where an internally piloted valve would stall - ideal on low-pressure lines or vacuum-based handling rigs.
Multi-Station Automation Manifolds
Mount the 450 g valve on a shared base to build a compact valve group feeding O50-80 mm actuators across grouped stations, wired from the DC24V terminal box.
Is the AirTAC 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08BG-W) the Right Valve?
The closed-center spool gives Cv 1.25, so match the valve to the bore: choose the 4V200 (Cv 1.0) for cylinders under ~O50 mm or move to the 4V400 (Cv 2.82) when a larger actuator needs faster travel. Pick the 30C center when the load must stay put at mid-stroke; the 30E variant lets the cylinder float, and 30P keeps both chambers pressured. A single valve works stand-alone, or mount several on a common manifold base for multi-station tooling. For a like-for-like replacement, verify five points: 4V300 body, 5/3 closed-center function, 1/4-inch port with G (BSPP) thread, DC24V coil, terminal-box entry - and confirm the external-pilot -W option is carried over if your plumbing depends on it.
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-08 Solenoid Valve, 4V300 Series (4V330C08BG-W) FAQ
It directs air to double-acting cylinders and actuators within its 21.3 mm2 (Cv 1.25) flow class, typically bores around O50-80 mm, with a 3 cycles-per-second limit. Single-acting cylinders are not its job - they need a 3/2 valve. At center all ports are blocked, so the cylinder pauses in position until the next solenoid pulse.
With pilot air supplied through a dedicated external port, the valve switches reliably even when main-line pressure sags or the circuit runs under vacuum, where an internally piloted valve may fail to shift. Keep in mind that a closed-center valve alone is not a certified safety device - for guaranteed holding of suspended loads, add pilot-operated check valves at the cylinder ports or a mechanical brake.
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Related AirTAC 4V Valves
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