Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C10A
The AirTAC Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C10A is a genuine 5/2-way solenoid valve solenoid valve with 330C10A 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 size330C10A
- Effective areaSee datasheet
- Flow (Cv)—
- Series4V
About the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C10A
The B03-4V330C10A is AirTAC's explosion-proof build of the 4V330C-10A, a 5/3-way closed-center solenoid valve designed for double-acting cylinders and actuators in potentially hazardous atmospheres. The "B03-" prefix marks this as the explosion-proof version, meaning its construction is engineered to contain ignition sources and prevent them from igniting surrounding flammable gases or dust. Because the exact protection level and certification depend on your specific zone and application, please confirm the precise rating with us before installation.
This valve directs compressed air to double-acting cylinders, and at its center position, all ports are blocked, which holds the cylinder firmly in place. With an effective area of 21.3 mm² (Cv 1.25), it suits cylinders in the 50-80 mm range. The AC220V coil consumes 4.5 VA, and the valve responds in 0.05 seconds or less. Weighing 450 g, it features an IP65-rated enclosure and a manual override for setup and emergency operation.
Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C10A Technical Specifications
| Model | Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C10A |
|---|---|
| Series | 4V solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Solenoid valve |
| Port size | 330C10A |
| Exhaust port | 330C10A |
| 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 B03-4V330C10A
| 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. |
| -330C10A | 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 B03-4V330C10A Is Used
Machine Tool Clamping
Use the closed-center function to lock workpieces in place during precision machining operations. The all-ports-blocked center holds the clamp cylinder securely, preventing movement and ensuring consistent part quality.
Intermediate Positioning
In automated assembly lines, the B03-4V330C10A can stop a cylinder at an intermediate position by de-energizing both solenoids. This allows for precise placement of components without complex servo controls.
Hazardous Area Actuation
In environments with flammable vapors or dust, the explosion-proof B03- prefix provides the necessary protection. Actuate double-acting cylinders for material handling or process control while mitigating ignition risks.
Is the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C10A the Right Valve?
Choose the B03-4V330C10A when you need explosion-proof construction combined with the 5/3 closed-center function for a double-acting cylinder in the 50-80 mm bore range. The closed center is ideal for stopping and holding a load in position when the valve is de-energized, making it suitable for intermediate positioning in automation cells. If your cylinder is smaller, consider the 4V200 series with its Cv 1.0 for a more compact and economical solution; for larger bores, step up to the 4V400 series with Cv 2.82.
When replacing an existing valve, verify the following five points: the body size is 4V300, the function is 5/3 closed center, the port is 3/8" with PT thread, the coil voltage is AC220V, and the electrical entry is a terminal box. This ensures a drop-in replacement. For multiple stations, consider a manifold base to consolidate wiring and reduce installation footprint.
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 B03-4V330C10A FAQ
The B03- prefix designates this as AirTAC's explosion-proof version of the standard 4V330C-10A. It is built to be used in hazardous atmospheres where ignition could be dangerous. However, the exact protection level and certification for your specific zone must be confirmed with us, as we do not have that detail in our data.
In the closed-center position, both solenoids are de-energized, and all ports (pressure, cylinder A, cylinder B, and exhausts) are blocked. This traps air on both sides of a double-acting cylinder, locking it in place. This is ideal for holding a load stationary without continuous power. Note that for suspended loads, a separate mechanical brake is recommended.
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