Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08B
The AirTAC Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08B is a genuine 5/2-way solenoid valve solenoid valve with 230C08B 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 size230C08B
- Effective areaSee datasheet
- Flow (Cv)—
- Series4V
About the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08B
The B03-4V230C08B is AirTAC's explosion-proof build of the 4V230C-08B, a 5/3-way closed-center solenoid valve for double-acting cylinders and actuators. At its center position, all ports are blocked, which holds the cylinder rod precisely in place - ideal for stopping a load mid-stroke without drift. The valve directs compressed air through 1/4-inch PT ports with a 13.6 mm² effective area (Cv 0.8), and its spool design responds in 0.05 seconds or less.
This SKU carries a DC24V coil rated at 3.0 W and a terminal-box electrical entry, making it a straightforward fit for standard 24V control systems. The B03- prefix marks this as the explosion-proof version of the base 4V230C-08B, built for hazardous or flammable atmospheres. Weighing 360 g, it suits double-acting cylinders in the 32-50 mm range. For the exact protection level and certification for your specific zone, please confirm with us before ordering.
Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08B Technical Specifications
| Model | Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08B |
|---|---|
| Series | 4V solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Solenoid valve |
| Port size | 230C08B |
| Exhaust port | 230C08B |
| 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 B03-4V230C08B
| 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. |
| -230C08B | 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 B03-4V230C08B Is Used
Precision Stopping
Hold a double-acting cylinder rod exactly at mid-stroke in a machining fixture. The closed center blocks all ports, preventing drift while the workpiece is clamped or measured.
Hazardous-Area Actuation
Operate a pusher or transfer cylinder in a paint shop or chemical processing line where flammable vapors may be present. The B03- explosion-proof build is specified for such atmospheres.
Position Locking
Lock a positioning cylinder in place during a dwell phase on an assembly station. The 5/3 closed-center function holds the load until the next control signal shifts the spool.
Is the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V230C08B the Right Valve?
Choose the B03-4V230C08B when you need a 5/3 closed-center valve with explosion-proof construction for a double-acting cylinder in a potentially flammable environment. The 13.6 mm² effective area (Cv 0.8) is sized for 32-50 mm cylinders; step down to the 4V100 series (Cv 0.6) for smaller bores or up to the 4V300 series (Cv 1.65) for larger actuators or faster cycling. The closed-center function is the right pick when you must hold a cylinder position without power - it blocks all ports at center.
For replacement, match five points exactly: body size (4V200), function (5/3 closed center), port and thread (1/4" PT), coil voltage (DC24V), and electrical entry (terminal box). The B03- prefix adds the explosion-proof requirement - verify the protection rating with us to ensure it matches your hazardous-area classification. If you need a grommet lead-out instead of a terminal box, or a G or NPT thread, check the other 4V230C-08 variants.
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 B03-4V230C08B FAQ
B03- marks AirTAC's explosion-proof version of the standard 4V230C-08B. The valve is built to operate safely in hazardous or flammable atmospheres. Our data does not include the specific protection level or certification details, so please confirm the exact rating and suitability for your zone with us before installation.
In the center position, all ports (pressure, A, and B) are blocked. This traps air on both sides of a double-acting cylinder, holding the piston rod firmly in place. It requires a double solenoid to shift to either working position; de-energizing both coils returns the spool to center, which stops 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 B03-4V230C08B
Send us the quantity, coil voltage and destination. We confirm price, stock and lead time — usually within 7-8 hours.