Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08A
The AirTAC Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08A is a genuine 5/2-way solenoid valve solenoid valve with 330C08A 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 size330C08A
- Effective areaSee datasheet
- Flow (Cv)—
- Series4V
About the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08A
The B03-4V330C08A is AirTAC's explosion-proof build of the 4V330C-08A, a 5/3-way closed-center solenoid valve designed for double-acting cylinders and actuators in potentially hazardous atmospheres. The leading "B03-" prefix identifies this as the explosion-proof version, so you can specify it with confidence for flammable environments where a standard valve would be unsafe.
This valve directs compressed air to one cylinder port while exhausting the other; at center, both work ports are blocked, locking the cylinder in position. It delivers a 21.3 mm² effective area (Cv 1.25) and suits ~O50-80 mm bore cylinders. The AC220V coil draws 4.5 VA, response time is ≤0.05 s, and the aluminum-alloy body weighs 450 g. Because it is the explosion-proof build, confirm the exact protection rating and certification for your specific zone with us before ordering.
Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08A Technical Specifications
| Model | Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08A |
|---|---|
| Series | 4V solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Solenoid valve |
| Port size | 330C08A |
| Exhaust port | 330C08A |
| 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 B03-4V330C08A
| 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. |
| -330C08A | 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 B03-4V330C08A Is Used
Machine Tool Clamping
Hold workpieces securely during milling or drilling operations. The closed center locks the clamp cylinder in place, preventing movement even if air pressure fluctuates.
Chemical Processing
Control valve actuators in areas where flammable vapors may be present. The explosion-proof build reduces ignition risk while the 5/3 closed-center function provides fail-safe positioning.
Press Safety Stops
Stop a press ram at an intermediate point with the closed-center function. Both cylinder ports are blocked, holding the ram steady until the next command is given.
Is the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08A the Right Valve?
Choose the B03-4V330C08A when you need a 5/3 closed-center valve with explosion-proof construction for a double-acting cylinder in the O50-80 mm bore range. The closed center holds the cylinder firmly when both solenoids are off, making it ideal for intermediate positioning or emergency stops where drift is unacceptable. If your cylinder is smaller, the 4V200 series (Cv 1.0) may be more economical; for larger bores, step up to the 4V400 (Cv 2.82).
For replacement, match the 4V300 body, the 5/3 closed-center function, the 1/4" PT ports, the AC220V coil, and the terminal-box electrical entry. If you need a different thread (G or NPT) or a grommet lead, confirm the exact explosion-proof variant with us, as the B03- build may have specific enclosure requirements.
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 B03-4V330C08A FAQ
B03- is AirTAC's designation for the explosion-proof version of the base model 4V330C-08A. It is built for use in hazardous or flammable atmospheres. The exact protection rating and certification depend on your zone, so please confirm those details with us before installation.
In the center position, both solenoids are de-energized and all ports are blocked. This locks the connected double-acting cylinder in place, preventing any movement. Energizing one solenoid or the other shifts the spool to extend or retract the cylinder.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC 4V Valves
Request a Quote for Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08A
Send us the quantity, coil voltage and destination. We confirm price, stock and lead time — usually within 7-8 hours.