Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V42015B
The AirTAC Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V42015B is a genuine 5/2-way solenoid valve solenoid valve with 42015B 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 size42015B
- Effective areaSee datasheet
- Flow (Cv)—
- Series4V
About the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V42015B
This B03-4V42015B is the explosion-proof build of AirTAC's 4V420-15B, purpose-built for hazardous or flammable atmospheres where standard valves are not acceptable. It directs compressed air to double-acting cylinders and actuators, and the double-solenoid 5/2 design holds its last pulsed position without power - no holding current, no spring return. The "B03-" prefix identifies this as the explosion-proof variant, so you get the same 48.0 mm² effective area (Cv 2.82) and 720 g body as the standard 4V420-15B, but in a build intended for risky environments.
With a DC24V coil drawing just 3.0 W and a response time of 0.05 s or less, this valve suits large-bore cylinders in the 80-125 mm range. The PT1/2" ports handle the high flow your big actuators need, and the IP65-rated enclosure keeps contaminants out. Because the exact protection level and certification for your specific zone must match your site's requirements, confirm those details with us before ordering - we'll make sure you get the right build for your classification.
Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V42015B Technical Specifications
| Model | Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V42015B |
|---|---|
| Series | 4V solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Solenoid valve |
| Port size | 42015B |
| Exhaust port | 42015B |
| 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 B03-4V42015B
| 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. |
| -42015B | 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 B03-4V42015B Is Used
Hazardous-Area Press Lines
Operate large double-acting clamping cylinders on stamping or forming presses in environments where flammable vapors or dust may be present, relying on the explosion-proof build to reduce ignition risk.
Chemical Batch Transfer
Control the double-acting actuation of large transfer valves or diverters in chemical processing lines, where the memory function holds the last position if control power blips.
Heavy Material Handling
Drive the extend/retract of large double-acting lift cylinders on material handling equipment in potentially explosive atmospheres, using the 48 mm² effective area for responsive movement.
Is the Airtac B03-4V Explosion-Proof Solenoid Valve B03-4V42015B the Right Valve?
Choose this B03-4V42015B when you need the 4V400's high flow (Cv 2.82) in an explosion-proof package for a double-acting cylinder up to 125 mm. If your cylinder is smaller - say 80 mm or less - the 4V300 series (Cv 1.65) is lighter and more economical, but you lose the explosion-proof build. For cylinders larger than 125 mm, step up to a bigger valve series or use a manifold to distribute flow. The double-solenoid memory function is ideal for applications where you want the valve to stay in its last position during a brief power loss - but remember, it is not a safety brake, so add a mechanical lock or pilot-operated check valve for suspended loads.
When replacing an existing valve, match these five points exactly: body size (4V400), function (5/2 double solenoid), port and thread (PT1/2"), coil voltage (DC24V), and electrical entry (terminal box). The terminal entry means you wire directly into the junction box rather than using a pre-wired lead. Since this is the explosion-proof version, also verify that the protection rating suits your hazardous area classification - confirm that with us, as we do not publish those figures here.
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 B03-4V42015B FAQ
B03- marks this as AirTAC's explosion-proof version of the standard 4V420-15B. It is built for use in hazardous or flammable atmospheres where a standard valve could be an ignition source. The performance figures - 48.0 mm² effective area, Cv 2.82, 720 g weight, DC24V 3.0 W coil - are identical to the standard model. However, we do not publish the specific protection level or certification here; you must confirm the exact rating for your zone with us before purchasing.
When you pulse one solenoid, the spool shifts and stays in that position even after power is removed - there is no spring to return it and no holding current required. The spool is held by land friction and balanced air pressure. This means the valve remembers its last commanded position during a power loss. Important: this is not a safety brake. For suspended loads or fall-protection scenarios, you must add a dedicated mechanical brake or a pilot-operated check valve at the cylinder ports.
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