Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230P08B
The AirTAC Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230P08B is a genuine 5/2-way solenoid valve solenoid valve with 230P08B 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 size230P08B
- Effective areaSee datasheet
- Flow (Cv)—
- Series4V
About the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230P08B
The B03-4V230P08B is the explosion-proof build of AirTAC's 4V230P-08B, designed for hazardous or flammable atmospheres where standard valves could be a risk. The leading "B03-" prefix identifies this as the explosion-proof version, so you can deploy reliable pneumatic control without compromising on safety in demanding environments. As a 5/3-way pressure-center valve, it pressurizes both cylinder ports when de-energized, holding the actuator in a defined mid-stroke position.
This unit delivers a 13.6 mm² effective area (Cv 0.8) and suits double-acting cylinders in the 32-50 mm range. With a DC24V coil drawing just 3.0 W and a response time of 0.05 s or less, it offers efficient, precise control. The 360 g aluminum body is built for industrial duty, and the terminal box entry simplifies wiring. For specific protection levels, certification bodies, or gas/dust group classifications, please confirm the exact rating with us before installation.
Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230P08B Technical Specifications
| Model | Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230P08B |
|---|---|
| Series | 4V solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Solenoid valve |
| Port size | 230P08B |
| Exhaust port | 230P08B |
| 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 B03-4V230P08B
| 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. |
| -230P08B | 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 B03-4V230P08B Is Used
Mid-Stroke Positioning
Hold a double-acting cylinder at a precise mid-stroke position by pressurizing both sides. Ideal for setup operations in CNC fixtures or adjustable stops where exact positioning is required before clamping.
Explosion-Risk Assembly
Control pneumatic actuators in paint shops, chemical processing lines, or solvent-handling areas where flammable vapors may be present. The explosion-proof build reduces ignition risk in these sensitive zones.
Dual-Pressure Locking
Use in a circuit that applies equal pressure to both cylinder ports to lock the actuator in place during a pause in the cycle. This provides a stable platform for secondary operations like inspection or manual adjustment.
Is the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230P08B the Right Valve?
Choose the B03-4V230P08B when your application demands explosion-proof construction in a 5/3 pressure-center configuration. The pressure-center function is ideal for applications requiring the cylinder to be held firmly in place at mid-stroke, with both sides pressurized to lock the piston. If your cylinder is smaller than 32mm, consider the 4V100 series (Cv 0.6) for a more compact and economical solution; for larger bores or faster cycling, step up to the 4V300 series (Cv 1.65).
When replacing an existing valve, verify the five key points: body size (4V200), function (5/3 pressure center), port size and thread (1/4" PT), coil voltage (DC24V), and electrical entry (terminal box). This ensures a drop-in fit with your existing manifold or piping. For applications requiring guaranteed load holding, especially with vertical or suspended loads, always add a mechanical brake or pilot-operated check valve at the cylinder ports, as the valve alone does not provide fail-safe braking.
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 B03-4V230P08B FAQ
The B03- prefix marks this as AirTAC's explosion-proof version of the standard 4V230P-08B. It is built for use in hazardous or flammable atmospheres. The exact protection level, certification, and zone suitability must be confirmed with us, as these details are not included in the standard model data.
When both solenoids are de-energized, the valve returns to its center position and pressurizes both cylinder ports (A and B) simultaneously. This creates equal pressure on both sides of the piston, locking the cylinder in place. This is different from a closed-center valve, which blocks all ports, or an exhaust-center valve, which vents both ports.
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