The AirTAC Airtac 4V Solenoid Valves 4V31010FT is a genuine 5/2-way single solenoid (spring return) solenoid valve with 31010FT 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 4V310-10FT is a 4V300-body directional valve with one solenoid and a spring return: energise the coil to send air to one side of a double-acting cylinder, cut the signal and the spring snaps the spool back to the exhaust position. This exact SKU is wired for a 12 V DC supply with a 2.5 W coil, terminates in a terminal box, and carries 3/8in NPT (tapered) ports - a low-voltage fit for vehicle-mounted and battery-fed pneumatics where 24 V or mains coils are not on offer. Flow sits at the top of the mid-size class: 28.0 mm2 effective area, Cv 1.65, cycling up to 4 times per second. That matches roughly Dia50-80 mm bores, and the valve answers in 0.05 s or less from coil-on to spool-shift, so stroke reversal is quick even on short cycles. Body is aluminium alloy, IP65 rated, and the valve bolts onto a manifold base if you later want a multi-valve group.
| Model | Airtac 4V Solenoid Valves 4V31010FT |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Single solenoid (spring return) |
| Port size | 31010FT |
| Exhaust port | 31010FT |
| 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. |
| -31010FT | 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.
Mobile hydraulic-pneumatic rigs run on the chassis 12 V battery, and the 2.5 W DC12V coil of the 4V310-10FT draws little current from that supply while Cv 1.65 fills a Dia63-80 tipping or tailgate-lift cylinder without starving it.
A small workholding press on a Dia63 cylinder develops about 156 kgf push at 0.5 MPa; the spring return gives a fail-to-retract stroke the moment the operator releases the maintained switch or foot pedal.
Reject or divert gates use a short-stroke double-acting cylinder; with 0.05 s or better response and up to 4 cycles per second, the valve keeps pace with high-rate conveyor indexing and NPT ports suit US-standard fittings.
Size both ways before ordering. Step down to the 4V200 body (Cv 1.0) if your cylinder is a Dia40 or smaller bore where 1.65 Cv is more flow than the application can use; step up to the 4V400 body (Cv 2.82) once you run Dia100 mm and larger cylinders or need faster full-stroke travel. For reference, a Dia63 bore gives about 156 kgf push at 0.5 MPa and a Dia80 bore about 251 kgf - both inside this valve's comfortable range. A single solenoid spring-return valve needs its coil energised for the whole advance stroke; if you prefer pulse-and-hold switching (coil only fires during the change), pick the double-solenoid 4V320 memory version instead. When replacing, match all five points: 4V300 body, function 10, 3/8in port with NPT thread, 12 V DC coil, and terminal-box entry.
Quick checklist
Flow: 28.0 mm2 effective area, Cv 1.65, cycling up to 4 per second. Electrical: DC12V coil at 2.5 W, IP65, insulation class B, terminal-box entry. Pneumatics: 0.15-0.8 MPa working pressure, 1.2 MPa proof, response 0.05 s or less, air filtered by a 40 um element, weight 310 g. It drives double-acting cylinders of roughly Dia50-80 mm bore.
The -T suffix gives NPT (National Pipe Taper) ports, so fittings from North American inventory thread straight in without converters, while the F voltage code means a 2.5 W DC12V coil for battery or vehicle supplies. The valve body, flow class and spring-return function are otherwise the same; if your machine runs 24 V DC or mains, order the matching B, A, C or E voltage code instead.
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