Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E08B
The AirTAC Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E08B is a genuine 5/2-way solenoid valve solenoid valve with 330E08B 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 size330E08B
- Effective areaSee datasheet
- Flow (Cv)—
- Series4V
About the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E08B
The B03-4V330E08B is the explosion-proof build of AirTAC's 4V330E-08B, a 5/3-way double solenoid valve with an exhaust center. When de-energized, both cylinder ports A and B vent to exhaust, allowing the connected double-acting cylinder to float freely. This makes it ideal for applications where manual positioning or emergency release of a load is required. The B03- prefix designates AirTAC's explosion-proof construction for use in potentially hazardous or flammable atmospheres; please confirm the exact protection rating and certification for your specific zone with us before ordering.
This valve delivers a 21.3 mm² effective area (Cv 1.25) and suits double-acting cylinders in the 50-80 mm range. The DC24V coil consumes just 3.0 W, and the valve responds in 0.05 s or less. With a 450 g body and IP65 protection, it is built for demanding industrial environments where safety and reliability are paramount. The terminal box entry simplifies wiring in permanent installations.
Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E08B Technical Specifications
| Model | Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E08B |
|---|---|
| Series | 4V solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Solenoid valve |
| Port size | 330E08B |
| Exhaust port | 330E08B |
| 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 B03-4V330E08B
| 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. |
| -330E08B | 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 B03-4V330E08B Is Used
Hazardous-Area Automation
Controls double-acting cylinders in paint shops, chemical processing lines, or solvent-handling areas where explosion-proof components are required. The exhaust center allows safe pressure release during maintenance.
Emergency Stop Circuits
In machine safety systems, the exhaust center function vents both cylinder ports when de-energized, allowing the actuator to move freely and release any trapped energy. Ideal for press guards and safety gates.
Manual Override Positioning
Used in material handling equipment where operators need to manually move a cylinder during setup or jams. The exhaust center lets the load float, enabling easy repositioning without fighting air pressure.
Is the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330E08B the Right Valve?
Choose the B03-4V330E08B when you need explosion-proof construction combined with 5/3 exhaust-center functionality. The exhaust center is ideal for applications where the cylinder must be free to move when the valve is centered, such as in emergency stop circuits or manual override scenarios. For smaller cylinders below 50 mm, consider stepping down to the 4V200 series (Cv 1.0); for larger bores above 80 mm, step up to the 4V400 series (Cv 2.82).
When replacing an existing valve, verify the 5-point match: body size (4V300), function (5/3 exhaust center), port and thread (1/4" PT), coil voltage (DC24V), and electrical entry (terminal box). This B03- prefix indicates the explosion-proof version, so confirm the specific hazardous-area rating required for your installation with our team before purchase.
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 B03-4V330E08B FAQ
The B03- prefix designates AirTAC's explosion-proof build of the standard 4V330E-08B valve. It is constructed for use in potentially hazardous or flammable atmospheres. The exact protection level, certification body, and gas/dust group ratings are not specified in our data - you must confirm these details with us before installation in a classified area.
In the center position, both cylinder ports A and B are connected to exhaust, so the double-acting cylinder is not pressurized on either side. This allows the actuator to float freely, which is useful for manual positioning or as a safety release. When either solenoid is energized, the spool shifts to pressurize one port while exhausting the other, moving the cylinder in the desired direction.
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