Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08A
The AirTAC Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08A is a genuine 5/2-way solenoid valve solenoid valve with 230C08A 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 size230C08A
- Effective areaSee datasheet
- Flow (Cv)—
- Series4V
About the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08A
The B03-4V230C08A is the explosion-proof build of AirTAC's 4V230C-08A, a 5/3-way closed-center solenoid valve with a PT1/4 port and AC220V coil. The B03- prefix identifies this as the hazardous-atmosphere version, so it is suited to flammable or explosive environments where a standard valve would be unsafe. Its closed-center spool blocks all ports at rest, which holds a double-acting cylinder's position precisely when neither coil is energised.
This valve delivers a 13.6 mm² effective area (Cv 0.8) and weighs 360 g, with a maximum frequency of 3 cycles per second. The AC220V coil draws 4.5 VA, and the response time is 0.05 s or less. It suits double-acting cylinders in the 32-50 mm range and carries IP65 protection. The exact explosion-protection level and certification for your zone must be confirmed with us before installation.
Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08A Technical Specifications
| Model | Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08A |
|---|---|
| Series | 4V solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Solenoid valve |
| Port size | 230C08A |
| Exhaust port | 230C08A |
| 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 B03-4V230C08A
| 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. |
| -230C08A | 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 B03-4V230C08A Is Used
Holding Cylinder Position
In a machining fixture, the closed center blocks all ports to lock a double-acting cylinder at a precise stop. The B03-4V230C08A's explosion-proof build allows this hold function in a workshop area where solvent vapors may be present.
Chemical Plant Actuation
Operate a valve or damper in a processing line where flammable gas could accumulate. The 5/3 closed-center function keeps the actuator in its last commanded position if control power drops, while the B03- build addresses the hazardous atmosphere.
Intermediate Stop Clamping
Clamp a workpiece at an intermediate point in an assembly station. The closed center holds the clamp steady without continuous coil power, and the 13.6 mm² effective area provides controlled speed for a 32-50 mm cylinder.
Is the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08A the Right Valve?
Choose the B03-4V230C08A when your application needs both explosion-proof construction and a 5/3 closed-center function. The closed center holds a cylinder in place when both coils are off, which is ideal for stopping a load mid-stroke without drifting. If your bore is under 32 mm, the 4V100 series (Cv 0.6) may be more economical; for bores above 50 mm or faster cycles, step up to the 4V300 (Cv 1.65).
Verify the replacement match on five points: body size (4V200), function (5/3 closed center), port and thread (PT1/4), coil voltage (AC220V), and electrical entry (terminal box). The B03- prefix means you are getting the explosion-proof variant, so confirm the protection rating and any required certification with us before ordering for a specific hazardous area.
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 B03-4V230C08A FAQ
B03- marks AirTAC's explosion-proof build of the standard 4V230C-08A valve. It is intended for hazardous or flammable atmospheres where a standard valve could ignite gases or dust. The exact protection level, Ex marking, and certification for your specific zone must be confirmed with us, as we do not list those details here.
With both coils de-energised, the spool returns to the center position where all ports are blocked. This traps air on both sides of a double-acting cylinder, holding it firmly in place. To move the cylinder, energise one coil to shift the spool; release it to return to the locked center. Note that this is not a safety brake for suspended loads - use a mechanical brake or pilot-operated check valve for that.
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