The AirTAC Airtac 4V Solenoid Valves 4V430C15BG is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 430C15BG 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 AirTAC 4V430C-15BG is a 5/3-way double-solenoid valve in the largest 4V body, built with 1/2 inch G (BSPP parallel) ports, a DC24V coil and a terminal-box entry. With both solenoids off, the closed-center spool blocks all five ports, so a double-acting cylinder connected to A and B holds its position mid-stroke instead of drifting. In its working positions the valve flows 40.0 mm2 (Cv 2.35), enough to cycle Dia80-125 mm cylinders at up to 3 cycles per second. This exact SKU suits 24 V DC control circuits typical of PLC and machine-builder panels: the coil draws only 3.0 W, so it can sit on a standard digital output without an interposing relay in most panels, and the terminal box means you land your own conduit wiring rather than managing a flying lead. Activation time is 0.05 s or less, the body is IP65 (DIN40050) aluminium alloy with class B insulation, and a manual override lets a technician stroke the valve during commissioning. Weight is 770 g.
| Model | Airtac 4V Solenoid Valves 4V430C15BG |
|---|---|
| Series | 4V400 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 430C15BG |
| Exhaust port | 430C15BG |
| 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. |
| -430C15BG | 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.
Positions a carton push head of about 3930 N push force at 0.5 MPa and parks it dead mid-stroke when the cycle pauses, because the closed center blocks A, B, P and the exhausts at once.
A 1/2in G port feeds a Dia80-125 mm gate cylinder that must stop a carton stream and stay put during a fault stop; Cv 2.35 with a 0.05 s activation keeps gate response crisp at 3 cycles per second.
Holds a heavy clamping slide at an intermediate height while the operator loads a fixture, with the DC24V 3.0 W coil driven straight from the safety PLC output through the terminal box.
Size both ways before you buy. Stepping down: if your cylinder is Dia80 mm or smaller (about 2510 N push at 0.5 MPa), the 4V300 in 1/2in or 3/8in trim, Cv 1.65, will run it adequately and costs less. Stepping up: 4V400 is already the largest 4V body, so for flows beyond Cv 2.35 on Dia125 mm and larger bores (Dia125 push is roughly 6130 N at 0.5 MPa) move to a bigger valve series or build the flow you need as a parallel pair on a manifold base - this body is designed to group on a common base plate. For a like-for-like replacement, match all five points: body size 4V400, function 30C (5/3 closed center), port and thread (1/2in, G parallel - if your piping is PT or NPT tapered, order the plain 4V430C-15B instead), coil voltage DC24V, and electrical entry terminal box (the -I suffix would be the grommet version with 0.5 m leads).
Quick checklist
It is a 5/3 closed-center, double-solenoid valve for double-acting cylinders and actuators in roughly the Dia80-125 mm bore class. Flow is 40.0 mm2 effective area, Cv 2.35, through 1/2in G (BSPP) ports; operating pressure is 0.15-0.8 MPa with 1.2 MPa proof pressure; activation time is 0.05 s or less and max frequency is 3 cycles per second; the DC24V coil draws 3.0 W; the aluminium body weighs 770 g and is IP65 with class B insulation. Air must be filtered to 40 um, and lubrication is not required.
The 30C spool blocks all ports at center, so a cylinder holds position against normal drift while de-energized - useful for mid-stroke pauses. It is not, however, a certified safety brake: internal spool leakage and any pressure surge can move a suspended load over time. For fall-protection or load-holding duty, add a pilot-operated check valve at the cylinder ports or a mechanical brake, and treat the valve as the directional control only.
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