Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08B
The AirTAC Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08B is a genuine 5/2-way solenoid valve solenoid valve with 330C08B 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 size330C08B
- Effective areaSee datasheet
- Flow (Cv)—
- Series4V
About the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08B
The B03-4V330C08B is AirTAC's explosion-proof build of the 4V330C-08B, a 5/3-way double-solenoid valve with a closed center. In its center position, all ports are blocked, which holds a double-acting cylinder's position firmly without consuming extra air. This makes it a strong choice for processes where a pause must not let the actuator drift.
With an effective area of 21.3 mm² (Cv 1.25) and a 3 cycle/sec max frequency, it suits double-acting cylinders in the 50-80 mm range. The DC24V coil draws 3.0 W, and the valve weighs 450 g. The leading "B03-" prefix marks this as the explosion-proof version for hazardous atmospheres; please confirm the exact protection rating and certification for your zone with us before ordering.
Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08B Technical Specifications
| Model | Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08B |
|---|---|
| Series | 4V solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Solenoid valve |
| Port size | 330C08B |
| Exhaust port | 330C08B |
| 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 B03-4V330C08B
| 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. |
| -330C08B | 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 B03-4V330C08B Is Used
Machining Fixtures
Hold a double-acting clamp cylinder in a fixed position during a milling or drilling cycle. The closed center keeps the clamp locked when the valve is de-energized.
Press Safety Pause
In a pneumatic press, use the closed center to stop the ram at an intermediate point. This gives operators a controlled pause without fully retracting the cylinder.
Hazardous-Area Actuation
The B03- prefix suits actuating a double-acting cylinder in a potentially flammable atmosphere. Confirm the exact zone rating with us, then use it for reliable position holding.
Is the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V330C08B the Right Valve?
Choose the B03-4V330C08B when you need a 5/3 closed-center valve for a double-acting cylinder in a potentially flammable environment, and when holding the actuator in place at center is more important than letting it float. The 1/4" PT ports and DC24V coil are fixed in this SKU. If your cylinder bore is smaller than 50 mm, the 4V200 series (Cv 1.0) may be enough; for bores above 80 mm, step up to the 4V400 (Cv 2.82).
For a replacement match, verify the body size (4V300), the 5/3 closed-center function, the 1/4" PT port thread, the DC24V coil voltage, and the terminal box electrical entry. If you need a different thread (G or NPT) or a grommet lead, that is a different SKU. Confirm the explosion-proof classification with us, as it is not stated in the model code.
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 B03-4V330C08B FAQ
B03- marks the explosion-proof build of the base 4V330C-08B model. It is intended for hazardous or flammable atmospheres. We do not list the protection level or certification in our data, so please confirm the exact rating and any certificates with us before installation.
When both solenoids are off, the closed center blocks all ports (P, A, B, and exhausts). This traps air on both sides of the cylinder piston, holding it in place. It is not a safety brake for suspended loads; for that, add a pilot-operated check valve or a mechanical brake.
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 B03-4V330C08B
Send us the quantity, coil voltage and destination. We confirm price, stock and lead time — usually within 7-8 hours.