The AirTAC Airtac 4V Solenoid Valves 4V31010BT is a genuine 5/2-way single solenoid (spring return) solenoid valve with 31010BT ports and an effective area of 28.0 mm² (Cv 1.65). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
The 4V310-10BT is a single-solenoid 5/2 directional valve with a 3/8in NPT thread, wired for DC24V through a terminal box. Energise the coil and air flows to one side of a double-acting cylinder; cut power and the internal spring snaps the spool back, so the valve needs a maintained electrical signal to stay shifted. Its 28.0 mm2 effective area (Cv 1.65) moves enough air to size with roughly O50-80 mm bores. The DC24V coil draws only 3.0 W, which keeps PLC transistor outputs comfortably inside their rating, and the terminal box entry suits fixed conduit wiring rather than flying leads. Shift response is 0.05 s or faster and the housing meets IP65 (DIN40050). Body weight is 310 g, and the valve bolts onto a manifold base if you later build a valve group.
| Model | Airtac 4V Solenoid Valves 4V31010BT |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 31010BT |
| Exhaust port | 31010BT |
| Effective area (Cv) | 28.0 mm² (Cv 1.65) |
| 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 | 4 cycle/sec |
| Response time | ≤ 0.05 s (activating) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Weight | 310 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 | 28.0 mm² |
|---|---|
| Flow coefficient | Cv 1.65 |
| 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. |
|---|---|
| 3 | Body size (4V300) — sets port & flow. |
| 1 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -31010BT | Port thread: M5 / 06=1/8" / 08=1/4" / 10=3/8" / 15=1/2". |
Related: 4V310 (single), 4V320 (double), 4V330C/E/P (5/3 center). Add the voltage suffix when ordering.
Swings an O63 pusher cylinder (about 156 kgf at 0.5 MPa) that squares each carton layer; spring return drops the pusher home whenever the 24V control loop is broken.
Feeds an O80 press cylinder (roughly 251 kgf at 0.5 MPa) for stamping part numbers; Cv 1.65 keeps short-stroke cycles running near the valve's 4 cycle/s ceiling.
The 3.0 W DC24V coil switches directly from machine PLC outputs to throw guide-rail gates between lanes, with the 0.05 s shift keeping gate timing tight.
Step down to the 4V200 series (Cv 1.0) when your cylinder is under O50 - an O40 bore at 0.5 MPa only produces about 64 kgf of push and gains nothing from the larger orifice. Step up to the 4V400 (Cv 2.82) past O80, since an O100 bore develops roughly 400 kgf at 0.5 MPa and would cycle slowly on a 4V300. Choose the single-solenoid 10 function when the machine must return to a home position on power loss; pick the double-solenoid 20 only if you want position memory. Individual bases suit one-off valves, while a shared manifold base cuts plumbing where several valves sit side by side. For a like-for-like replacement, match all five points: 4V300 body, function 10, 3/8in port in NPT, DC24V coil, terminal entry.
Quick checklist
Effective area 28.0 mm2 (Cv 1.65) on the 5/2 paths, response time 0.05 s or less, working pressure 0.15-0.8 MPa with 1.2 MPa proof pressure, up to 4 cycles per second, and a DC24V coil rated at 3.0 W. Supply air filtered to 40 um; the valve operates from -20 to +70 C and needs no lubrication.
T specifies NPT (tapered) ports instead of the standard PT Rc or the optional G parallel BSPP thread. Seal NPT with thread tape as usual, but avoid substituting a PT or G version on piping built for NPT. The full like-for-like match is: 4V300 body, 10 single-solenoid function, 3/8in port, DC24V, terminal box entry, NPT thread.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, coil voltage and destination. We confirm price, stock and lead time — usually within 7-8 hours.