The AirTAC Airtac 4V Solenoid Valves 4V430C15EIT is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 430C15EIT ports and an effective area of 40.0 mm² (Cv 2.35). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
The 4V430C-15EIT is a 5/3-way double-solenoid directional valve from AirTAC's largest 4V body, built here with 1/2in NPT tapered ports. With both coils de-energized, the closed center blocks supply, both cylinder ports and the two exhausts, so a double-acting cylinder freezes exactly where it stopped when power drops. Flow capacity sits at 40.0 mm2 effective area (Cv 2.35), a step below the 48.0 mm2 of the 5/2 versions of the same body because the center-spool lands take up port area, and the valve switches up to 3 cycles per second. It suits cylinders of roughly Dia 80 to Dia 125 mm, where a Dia 125 bore develops about 613 kgf at 0.5 MPa. This exact SKU pairs an AC24V coil drawing 5.0 VA with a grommet electrical entry: a 0.5 m pre-wired flying lead that lands directly on a machine control cabinet with no terminal-box wiring. AC24V is a common coil choice on presses and lift equipment where control circuits run at safety extra-low voltage. Response time is 0.05 s or less, protection is IP65 (DIN40050), the aluminum-alloy body weighs 770 g, and a locking manual override plus a manifold-base option are built in.
| Model | Airtac 4V Solenoid Valves 4V430C15EIT |
|---|---|
| Series | 4V400 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 430C15EIT |
| Exhaust port | 430C15EIT |
| Effective area (Cv) | 40.0 mm² (Cv 2.35) |
| 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 | 770 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 | 40.0 mm² |
|---|---|
| Flow coefficient | Cv 2.35 |
| 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. |
| 3 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -430C15EIT | 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.
A Dia 100 mm bore vise on a horizontal band saw draws NPT plumbing straight off the shelf in North America. Cv 2.35 fills the clamp chamber quickly, and the closed center keeps the vise jaw fixed if the 24 VAC control circuit drops mid-cut.
A Dia 125 mm cylinder delivers about 613 kgf at 0.5 MPa on lift tables moving filled pallets. Pulsing both coils briefly parks the table between stations with all ports blocked, and the 0.5 m grommet lead ties into the low-voltage control cabinet without extra wiring.
Dia 80 mm cylinders (about 251 kgf push at 0.5 MPa) stroke hopper gates up to 3 times per second at peak duty. The closed center stops the gate dead wherever it is when the operator releases the switch, so partial dosing positions hold between pulses.
Size both directions. If your cylinder is Dia 50-63 mm, the 4V300 body (Cv 1.65, 3/8in ports) is the cheaper match and switches a lighter spool faster. If position hold is not actually needed, the 4V420 5/2 version of this same body gives you more flow, 48.0 mm2 / Cv 2.82, at 3 c/s. Above this body there is no bigger 4V size: for flow beyond Cv 2.35, step to a larger valve series or split the supply across an integrated manifold group on a common base. Function check: closed center (30C) to park a load; exhaust center (30E) to let it float; pressure center (30P) to keep both sides live. Replacing an existing valve? Match five points exactly: body size (4V400), function digit (30C), port and thread (1/2in NPT), coil voltage (AC24V), and electrical entry (grommet with 0.5 m lead). For any load-holding duty where a dropped load could injure, add pilot-operated check valves at the cylinder ports or a mechanical brake - the closed center alone is not a certified safety device.
Quick checklist
Flow: 40.0 mm2 effective area, Cv 2.35, up to 3 cycles per second. Response: 0.05 s or less to actuate. Pressure: 0.15-0.8 MPa working, 1.2 MPa proof. Electrical: AC24V coil at 5.0 VA, grommet entry with a 0.5 m lead, IP65 (DIN40050), class B insulation. Air quality: filtration to 40 um, lubrication not required. Body: aluminum alloy, 770 g, manual override, manifold-base capable.
AC24V (5.0 VA) plugs into safety extra-low voltage control circuits common on presses, lifts and saws, and the grommet entry gives you a ready-made 0.5 m flying lead, so no terminal-box opening or crimping on site. The NPT thread is tapered per US standard, so it seals with thread sealant into American pipe fittings without G-to-NPT adapters. Keep the closed-center 30C function when the cylinder must stay put on signal loss, and remember to back up any suspended-load duty with pilot-operated check valves.
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