AirTAC 4V420-15 Solenoid Valve, 4V400 Series (4V42015B-W)
The AirTAC AirTAC 4V420-15 Solenoid Valve, 4V400 Series (4V42015B-W) is a genuine 5/2-way double solenoid (memory) solenoid valve with W 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 sizeW
- Effective area48.0 mm²
- Flow (Cv)2.82
- Series4V400
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the AirTAC 4V420-15 Solenoid Valve, 4V400 Series (4V42015B-W)
The 4V42015B-W is the 4V400-series 5/2 double-solenoid valve built on AirTAC's largest 4V body, with the -W external-pilot option: pilot air enters through its own separate port rather than being tapped internally, so the spool still shifts dependably even when the main line runs at low pressure or in vacuum / low-pressure circuits. It directs compressed air to double-acting cylinders and actuators, switching on a pulse and then holding its last position by spool friction and balanced pressure - no spring, no holding current, and no magnetic latching involved.
Flow capacity sits at an effective area of 48.0 mm2 (Cv 2.82), the highest of any 4V body, which suits it to roughly O80-125 mm bore double-acting cylinders. The exact SKU carries a DC24V coil drawing 3.0 W with a terminal-box electrical entry and 1/2" PT tapered ports. It weighs 720 g, responds in 0.05 s or less, and carries IP65 protection on the coil housing.
AirTAC 4V420-15 Solenoid Valve, 4V400 Series (4V42015B-W) Technical Specifications
| Model | AirTAC 4V420-15 Solenoid Valve, 4V400 Series (4V42015B-W) |
|---|---|
| Series | 4V400 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Double solenoid (memory) |
| Port size | W |
| Exhaust port | W |
| 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 4V420-15 Solenoid Valve, 4V400 Series (4V42015B-W)
| 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. |
| -W | 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 4V420-15 Solenoid Valve, 4V400 Series (4V42015B-W) Is Used
Heavy-duty clamping fixtures
Holds big clamping cylinders on the last pulsed position through a power interruption, and the external pilot keeps switching crisp even when the clamp circuit pressure dips.
Press and forming actuators
The 48.0 mm2 effective area (Cv 2.82) supports the high flow a press or forming cylinder needs, with sub-0.05 s response keeping the stroke timing repeatable.
Large material-handling actuators
Suits roughly O80-125 mm bore double-acting actuators on lifting, pushing and diverting duties in handling equipment running on a 24 V DC control system.
Is the AirTAC 4V420-15 Solenoid Valve, 4V400 Series (4V42015B-W) the Right Valve?
Choose the 4V42015B-W when you need two-wire pulse control on a large-bore circuit: the double-solenoid memory function suits actuators that must stay put when control power drops, and the external pilot makes it the pick for low main-pressure or vacuum setups where an internally piloted valve could hesitate. If your cylinder is under about O80 mm, the 4V300 (Cv 1.65) is usually the more economical match; the 4V400 is the biggest 4V body, so beyond Cv 2.82 you move to a larger valve series or a manifold group on a common base. For a drop-in replacement, match all five points: body size 4V400, function (double solenoid, plus the -W pilot option), 1/2" PT port thread, DC24V coil, and terminal-box entry.
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 4V420-15 Solenoid Valve, 4V400 Series (4V42015B-W) FAQ
With Cv 2.82 (effective area 48.0 mm2) it is sized for double-acting cylinders of roughly O80-125 mm bore. It is a 5/2 valve, so it pressurises one cylinder side while exhausting the other - it is not for single-acting cylinders, which need a 3/2 valve.
The -W variant feeds pilot air from a separate external port instead of the internal tap, so the spool still shifts reliably when main-line pressure is low or the circuit runs in vacuum. Apart from the pilot arrangement it is the same 5/2 double-solenoid memory valve - DC24V 3.0 W coil, terminal entry, 1/2" PT ports.
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Related AirTAC 4V Valves
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