Airtac 4V400 Solenoid Valve 4V42015CI
The AirTAC Airtac 4V400 Solenoid Valve 4V42015CI is a genuine 5/2-way double solenoid (memory) solenoid valve with 42015CI ports and an effective area of 48.0 mm² (Cv 2.82). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
- Valve type5/2-way
- FunctionDouble solenoid (memory)
- Port size42015CI
- Effective area48.0 mm²
- Flow (Cv)2.82
- Series4V400
About the Airtac 4V400 Solenoid Valve 4V42015CI
The AirTAC 4V420-15CI is a 5/2-way double-solenoid valve that directs compressed air to double-acting cylinders and rotary actuators, using a memory-hold mechanism. Once pulsed, the spool stays in its last commanded position without continuous current, making it ideal for energy-conscious circuits where holding a state matters. This variant comes pre-wired with a 0.5 m flying lead via a DIN-style grommet and a 110 V AC coil drawing 4.5 VA.
Built on the largest 4V body, the 4V400 series delivers an effective area of 48.0 mm² (Cv 2.82) and suits cylinders in the ~Ø80–125 mm range. The sliding-column design achieves a response time of 0.05 s or less, operates at up to 3 cycles per second, and weighs 720 g. The aluminum-alloy body carries an IP65 protection rating and requires no lubrication when supplied with 40 µm filtered air.
Airtac 4V400 Solenoid Valve 4V42015CI Technical Specifications
| Model | Airtac 4V400 Solenoid Valve 4V42015CI |
|---|---|
| Series | 4V400 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Double solenoid (memory) |
| Port size | 42015CI |
| Exhaust port | 42015CI |
| Effective area (Cv) | 48.0 mm² (Cv 2.82) |
| 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 | 720 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 | 48.0 mm² |
|---|---|
| Flow coefficient | Cv 2.82 |
| 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 4V42015CI
| 4V | Solenoid valve, spool type, 4-series. |
|---|---|
| 4 | Body size (4V400) — sets port & flow. |
| 2 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -42015CI | 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 4V42015CI Is Used
Large Part Ejectors
In material handling lines, the 4V420-15CI shifts a large-bore double-acting cylinder to eject heavy parts. The memory function keeps the ejector retracted between cycles without powering the coil, reducing heat buildup in the panel.
Hydraulic Press Alternatives
For pneumatic clamping on large assembly fixtures, this valve directs air to a Ø100 mm cylinder. The double-solenoid memory holds clamping force after the PLC signal drops, while the Cv 2.82 flow ensures rapid pressurization.
Diverter Gates
On high-volume sortation conveyors, the 4V420-15CI controls a diverter gate. The AC110V grommet coil simplifies wiring in field installations, and the valve's 3 cycles/sec maximum frequency keeps up with fast sortation rates.
Is the Airtac 4V400 Solenoid Valve 4V42015CI the Right Valve?
Choose the 4V420-15CI when your application needs a 5/2 double-solenoid valve that holds position after a signal is removed, saving energy and simplifying control logic. The 1/2-inch port and Cv 2.82 flow capacity make it a strong match for driving larger double-acting cylinders. If your cylinder is smaller—typically below Ø63 mm—stepping down to a 4V300 series valve (Cv ~1.65) often provides a more responsive and economical fit.
For replacement, match five key points: the 4V400 body size, the 20-function (double solenoid, memory), the 1/2-inch port, the AC110V coil voltage, and the grommet electrical entry with flying lead. The PT (Rc) tapered thread ensures a tight metal-to-metal seal on the piping. Since the 4V400 is the largest 4V body, applications needing still higher flow should consider a larger valve series or a manifolded group.
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 4V42015CI FAQ
The spool remains in its last pulsed position through land friction and balanced pressure forces. There is no spring to return it and no magnetic latching—once shifted, it simply stays until the opposing solenoid receives a pulse. This design eliminates holding current and reduces coil heat.
With an effective area of 48.0 mm² (Cv 2.82), this valve is typically paired with double-acting cylinders from approximately Ø80 mm up to Ø125 mm. The 1/2-inch port and high flow capacity provide crisp actuation for large-bore pneumatic cylinders in industrial automation.
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