Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E10B
The AirTAC Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E10B is a genuine 5/2-way solenoid valve solenoid valve with 330E10B ports and an effective area of See datasheet (Cv —). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
- Valve type5/2-way
- FunctionSolenoid valve
- Port size330E10B
- Effective areaSee datasheet
- Flow (Cv)—
- Series4V
About the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E10B
The B03-4V330E10B is the explosion-proof build of AirTAC's 4V330E-10B, engineered for hazardous or flammable atmospheres where standard valves are not acceptable. This 5/3-way, double-solenoid valve uses an exhaust center: when both coils are de-energized, both cylinder ports A and B are opened to exhaust, allowing the actuator to float freely with no pressure holding it in place. The B03- prefix marks this as the explosion-proof version, but you must confirm the exact protection rating and certification for your specific zone with us before installation.
With an effective area of 21.3 mm² (Cv 1.25), this valve suits double-acting cylinders in the 50-80 mm range, delivering controlled flow for mid-size automation tasks. The DC24V coil draws just 3.0 W, and the valve responds in 0.05 s or less, making it a solid choice for precision applications where both speed and safety are priorities. The aluminum-alloy body weighs 450 g, and the IP65-rated enclosure protects the coil from dust and water jets in demanding industrial environments.
Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E10B Technical Specifications
| Model | Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E10B |
|---|---|
| Series | 4V solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Solenoid valve |
| Port size | 330E10B |
| Exhaust port | 330E10B |
| Effective area (Cv) | See datasheet (Cv —) |
| 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 | See datasheet |
| Response time | ≤ 0.05 s (activating) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Weight | See datasheet |
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 | See datasheet |
|---|---|
| Flow coefficient | Cv — |
| Response time | ≤ 0.05 s |
| Coil power | AC 3.5–4.5 VA · DC 2.5–3.0 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 B03-4V Explosion-Proof Solenoid Valve B03-4V330E10B
| 4V | Solenoid valve, spool type, 4-series. |
|---|---|
| B | Body size (4V) — sets port & flow. |
| 0 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -330E10B | Port thread: M5 / 06=1/8" / 08=1/4" / 10=3/8" / 15=1/2". |
Related: 4VB10 (single), 4VB20 (double), 4VB30C/E/P (5/3 center). Add the voltage suffix when ordering.
Where the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E10B Is Used
Hazardous Process Lines
Controls double-acting cylinders in chemical or solvent handling lines where flammable vapors may be present. The explosion-proof build reduces ignition risk, but verify the zone rating with us before deployment.
Paint & Coating Systems
Directs air to cylinders that position spray guns or move parts through coating booths. The exhaust-center function lets operators manually reposition tooling when the system is offline.
Gas Detection Equipment
Operates sample-taking cylinders in gas analysis systems installed in potentially explosive atmospheres. The 0.05 s response and 3.0 W DC24V coil suit sensitive electronic control loops.
Is the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E10B the Right Valve?
Choose the B03-4V330E10B when you need a 5/3 exhaust-center valve for a double-acting cylinder in the 50-80 mm bore range and require explosion-proof construction. The exhaust-center function is ideal for applications where the load must be allowed to float or where trapped pressure could cause damage - for example, when a cylinder must be pushed manually during setup or when a jam must be cleared without fighting residual pressure. If your cylinder is smaller than 50 mm, the 4V200 series (Cv 1.0) may be more economical; for bores above 80 mm, step up to the 4V400 series (Cv 2.82) for adequate flow.
When replacing an existing valve, verify the five critical points: body size (4V300), function (5/3 exhaust center), port and thread (3/8" PT), coil voltage (DC24V), and electrical entry (terminal box). The terminal entry accepts standard cable glands, and the DC24V coil is compatible with most PLC outputs. If your application needs a different center function - closed or pressure - consider the 4V330C or 4V330P variants, but note that this B03- prefix is specific to the explosion-proof build and must be confirmed for your zone classification.
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 B03-4V Explosion-Proof Solenoid Valve B03-4V330E10B FAQ
The B03- prefix marks AirTAC's explosion-proof build of the standard 4V330E-10B. It is intended for hazardous or flammable atmospheres where standard valves could pose an ignition risk. However, we do not publish a specific protection level or certification number for this variant - you must confirm the exact rating and suitability for your zone with us before ordering.
In the exhaust-center position (both coils de-energized), both cylinder ports A and B are connected to exhaust. This means the double-acting cylinder is not held by air pressure and can be moved freely by external forces. This is useful for manual setup, emergency release, or applications where the load must not be trapped under pressure. Note that this valve alone does not provide safety braking for suspended loads - a mechanical brake or pilot-operated check valve is required for that.
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