Airtac 4V400 Solenoid Valve 4V430C-15-B
The AirTAC Airtac 4V400 Solenoid Valve 4V430C-15-B is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with B ports and an effective area of 40.0 mm² (Cv 2.35). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
- Valve type5/3-way
- Function5/3 double solenoid — Closed center
- Port sizeB
- Effective area40.0 mm²
- Flow (Cv)2.35
- Series4V400
About the Airtac 4V400 Solenoid Valve 4V430C-15-B
The AirTAC 4V430C-15B is a 5/3-way double-solenoid valve built on the large 4V400 body, directing compressed air to double-acting cylinders and actuators. When both solenoids are de-energised, the closed center spool blocks all ports, trapping air on both sides of the piston to hold the load in place—ideal for mid-stroke stops on presses or vertical clamps where drift is unacceptable.
This DC24V terminal-box model draws just 3.0 W and switches in 0.05 s or less, with an effective area of 40.0 mm² (Cv 2.35). It weighs 770 g and suits ~Ø80–125 mm cylinders. The aluminum-alloy body carries an IP65 protection rating, and the spool includes a manual override for setup without power.
Airtac 4V400 Solenoid Valve 4V430C-15-B Technical Specifications
| Model | Airtac 4V400 Solenoid Valve 4V430C-15-B |
|---|---|
| Series | 4V400 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | B |
| Exhaust port | B |
| Effective area (Cv) | 40.0 mm² (Cv 2.35) |
| 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 | 3 cycle/sec |
| Response time | ≤ 0.05 s (activating) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Weight | 770 g |
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 | 40.0 mm² |
|---|---|
| Flow coefficient | Cv 2.35 |
| Response time | ≤ 0.05 s |
| Coil power | AC 4.5 VA · DC24V 3.0 W · DC12V 2.5 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 4V400 Solenoid Valve 4V430C-15-B
| 4V | Solenoid valve, spool type, 4-series. |
|---|---|
| 4 | Body size (4V400) — sets port & flow. |
| 3 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -B | Port thread: M5 / 06=1/8" / 08=1/4" / 10=3/8" / 15=1/2". |
Related: 4V410 (single), 4V420 (double), 4V430C/E/P (5/3 center). Add the voltage suffix when ordering.
Where the Airtac 4V400 Solenoid Valve 4V430C-15-B Is Used
Heavy Press Mid-Stroke Hold
Stops a large press platen mid-cycle and holds it under trapped air, preventing creep while a part is inspected or re-positioned.
Vertical Clamp & Lift Pause
Powers a Ø100 mm vertical clamp cylinder; the closed center locks the clamp in place during a dwell, keeping the workpiece secure without continuous power.
Palletiser Stop Station
Controls a heavy stop-gate cylinder on a pallet conveyor, holding the gate firmly shut at center to absorb impact without drifting open.
Is the Airtac 4V400 Solenoid Valve 4V430C-15-B the Right Valve?
Choose the 4V430C-15B when your application demands a mid-stroke stop with the cylinder held firmly under trapped pressure. The closed center is the go-to for vertical loads or clamping sequences where you cannot tolerate drift during a pause. If the cylinder can safely float at center—say, on a horizontal slide—the 4V430E exhaust-center variant is a better match.
This is the largest 4V body; step down to the 4V300 series (Cv 1.65) for ~Ø40–63 mm cylinders. For replacement, match all five points: 4V400 body, 5/3 closed-center function, 1/2 in PT port, DC24V coil, and terminal-box entry. Always add a pilot-operated check valve at the cylinder ports if the load is suspended and safety braking is required.
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 4V400 Solenoid Valve 4V430C-15-B FAQ
With a Cv of 2.35 and 40.0 mm² effective area, it suits double-acting cylinders roughly Ø80–125 mm. For smaller Ø40–63 mm cylinders, stepping down to the 4V300 series (Cv 1.65) often gives better speed control.
Both solenoids de-energise and the spool springs to the center position, blocking all ports. The cylinder stops and holds its last position under trapped air pressure. Note that this is not a safety-rated hold; for suspended loads, add a mechanical brake or pilot-operated check valve.
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