The AirTAC Airtac 4V Solenoid Valves 4V41015CT is a genuine 5/2-way single solenoid (spring return) solenoid valve with 41015CT 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.
The 4V410-15CT is a single-solenoid 5/2-way directional valve in the largest 4V400 body, built with tapered NPT (National Pipe Thread) ports. One solenoid shifts the spool to pressurise one side of a double-acting cylinder while the other side exhausts; when the coil de-energises, the internal spring snaps the spool back, so the valve behaves like a latching relay for your cylinder stroke - signal on equals position one, signal off always equals position two. Flow capacity is generous for this frame: an effective area of 48.0 mm2 and Cv 2.82, which pairs it with double-acting cylinders of roughly Dia 80 to Dia 125 mm. The actuating time is 0.05 s or less, the aluminum-alloy body weighs 590 g, and the coil is sealed to IP65 (DIN 40050) against washdown dust and spray. AirTAC publishes flow as a chart rather than a single figure, so size on effective area and Cv.
| Model | Airtac 4V Solenoid Valves 4V41015CT |
|---|---|
| Series | 4V400 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 41015CT |
| Exhaust port | 41015CT |
| 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 | 590 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.
| 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.
| 4V | Solenoid valve, spool type, 4-series. |
|---|---|
| 4 | Body size (4V400) — sets port & flow. |
| 1 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -41015CT | 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.
US-spec press tooling with NPT plumbing: the 48.0 mm2 effective area feeds a Dia 100 mm double-acting cylinder, and the spring return guarantees the ram retreats the moment the signal drops - a fail-safe posture for a stamping fixture.
Mobile lift and dump bodies built with NPT hydraulic-to-pneumatic interfaces suit the Cv 2.82 orifice; releasing the coil lets the spring return drop the body without a second solenoid pulse, simplifying the control circuit.
Pusher-armed diverters at the end of bottle or carton conveyors demand fast reversal; 0.05 s actuation and a 3 cycle/sec rating keep a Dia 80 mm pusher cylinder cycling at full line speed.
The -CT suffix matters when your machine is destined for North America: these are tapered NPT threads that seal on a thread sealant or tape rather than the parallel land of a G fitting, so match your manifold and hose ends before ordering. To step down, the 4V300 series offers roughly half the flow (Cv 1.65) - a better match for cylinders below about Dia 80 mm where Cv 2.82 would waste cycle air. There is no 4V body larger than this one; for higher flow, move to a bigger valve series or build a manifold group on a common base. Choosing function: keep the single solenoid (10) if a fail-to-spring-return position is desired, pick double solenoid 20 for memory, or 30C/E/P 5/3 variants for center-position control. Replacement match is a 5-point check: 4V400 body, function digit, 1/2in port with NPT thread, coil voltage, and electrical entry (terminal box here, grommet on -I codes).
Quick checklist
It is a 5/2 spring-return valve with Cv 2.82 and 48.0 mm2 effective area, comfortable for double-acting cylinders of roughly Dia 80 to Dia 125 mm. It runs on 0.15-0.8 MPa, reacts in 0.05 s or less at up to 3 cycles per second, and the air must be filtered to 40 um. The NPT port is 1/2in taper, so seal with tape or paste, not an O-ring face.
Energising the coil shifts the spool to one switched position; the instant the coil loses power, a mechanical spring drives the spool back to the rest position regardless of what the control system is doing. That makes this valve a natural choice wherever the safe or default posture is 'cylinder retracted' - the circuit fails to the rest state even during a total control-power outage, with no latching magnet, no pulse memory, and no holding current needed.
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