AirTAC 4V420-15B Solenoid Valve, 5/2-way, PT1/2, DC24V, terminal entry (4V42015B)
The AirTAC AirTAC 4V420-15B Solenoid Valve, 5/2-way, PT1/2, DC24V, terminal entry (4V42015B) is a genuine 5/2-way double solenoid (memory) solenoid valve with 42015B 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 size42015B
- 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 4V420-15B Solenoid Valve, 5/2-way, PT1/2, DC24V, terminal entry (4V42015B)
The 4V420-15B is a 5/2-way double-solenoid valve built on the largest 4V body, directing compressed air to double-acting cylinders and actuators with a 1/2-inch port size. Its dual-coil memory design shifts the spool with a momentary pulse and then holds that position without consuming holding current—when power is removed from both coils, the valve simply stays in its last commanded state, making it ideal for applications where a constant electrical signal is impractical or energy must be conserved.
This DC24V terminal-box model weighs 720 g and delivers an effective area of 48.0 mm² (Cv 2.82), placing it in the right flow class for driving bore sizes roughly in the O80 to O125 mm range. The aluminum-alloy body houses a sliding-column spool that responds in 0.05 seconds or less, and the 3.0 W coil keeps heat low inside the IP65-rated enclosure.
AirTAC 4V420-15B Solenoid Valve, 5/2-way, PT1/2, DC24V, terminal entry (4V42015B) Technical Specifications
| Model | AirTAC 4V420-15B Solenoid Valve, 5/2-way, PT1/2, DC24V, terminal entry (4V42015B) |
|---|---|
| Series | 4V400 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Double solenoid (memory) |
| Port size | 42015B |
| Exhaust port | 42015B |
| 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 4V420-15B Solenoid Valve, 5/2-way, PT1/2, DC24V, terminal entry (4V42015B)
| 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. |
| -42015B | 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 4V420-15B Solenoid Valve, 5/2-way, PT1/2, DC24V, terminal entry (4V42015B) Is Used
Large-Bore Cylinder Control
Pulse-and-hold operation drives O100 mm double-acting cylinders on packaging and palletising lines, where the memory spool keeps the actuator extended without heating a coil.
Heavy Clamping & Pressing
Suits pneumatic presses and welding clamps that must stay engaged during a power fluctuation—the 4V420-15B holds its last position without any holding current.
Material Handling Gates
Directs air to large diverters and hopper gates. A momentary signal opens or closes the gate, and the valve’s memory function maintains the state through machine idle periods.
Is the AirTAC 4V420-15B Solenoid Valve, 5/2-way, PT1/2, DC24V, terminal entry (4V42015B) the Right Valve?
Choose the 4V420-15B when your circuit needs a 5/2 valve that retains its position without a continuous signal—a double-solenoid memory function is the correct pick for energy-sensitive sequences or holding a cylinder end-position during a power dip. If your cylinder is smaller (around O50–O63 mm), the 4V300 series with its Cv of 1.65 may offer a better size-to-flow match and a lighter manifold footprint.
This is the largest body in the 4V family; for flows exceeding the 4V400’s 48.0 mm² effective area, stepping up to a larger valve series or ganging multiple units on a base is the typical path. When replacing an existing valve, match five points: 4V400 body size, double-solenoid (20) function, 1/2-inch PT-threaded ports, DC24V coil voltage, and the standard terminal-box electrical 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 4V420-15B Solenoid Valve, 5/2-way, PT1/2, DC24V, terminal entry (4V42015B) FAQ
With a Cv of 2.82 and a 48.0 mm² effective area, it suits double-acting cylinders roughly in the O80 to O125 mm bore range. For smaller O50–O63 mm cylinders, a 4V300-series valve (Cv 1.65) is often a better flow match.
The spool is shifted by a short pulse to either coil and then remains in place through balanced pressure and land friction—there is no spring to return it and no magnetic latching. It simply stays where it was last pulsed. For safety-critical suspended loads, always add a pilot-operated check valve or mechanical brake at the cylinder ports.
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Related AirTAC 4V Valves
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