The AirTAC Airtac 4V Solenoid Valves 4V230C-08AG is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 08AG ports and an effective area of 13.6 mm² (Cv 0.8). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
The 4V230C-08AG is a 5/3-way double-solenoid pneumatic directional valve that stops a double-acting cylinder mid-stroke and holds it under pressure. Its closed-center spool blocks all ports at the neutral position, so the cylinder resists external movement without drifting—ideal for pause-and-hold sequences in clamping or vertical lift-assist stations.
This configuration ships with an AC220V coil drawing 4.5 VA and a grommet-style electrical entry with a 0.5 m flying lead, ready for direct DIN-rail wiring. Built on the 4V200 aluminum body, it delivers an effective area of 13.6 mm² (Cv 0.8), a 3 cycles/sec maximum frequency, and a response time of 0.05 s or below, suiting ~Ø32–50 mm double-acting actuators on G1/4 (BSPP parallel) ports.
| Model | Airtac 4V Solenoid Valves 4V230C-08AG |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 08AG |
| Exhaust port | 08AG |
| Effective area (Cv) | 13.6 mm² (Cv 0.8) |
| 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 | 360 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 | 13.6 mm² |
|---|---|
| Flow coefficient | Cv 0.8 |
| 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. |
|---|---|
| 2 | Body size (4V200) — sets port & flow. |
| 3 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -08AG | Port thread: M5 / 06=1/8" / 08=1/4" / 10=3/8" / 15=1/2". |
Related: 4V210 (single), 4V220 (double), 4V230C/E/P (5/3 center). Add the voltage suffix when ordering.
The closed center holds a clamp at an intermediate position, preventing drift while a secondary operation finishes—common in welding fixtures and assembly jigs.
Stops a lifting cylinder partway through its stroke for inspection or tool change, with all ports blocked to support the load until the next signal.
Pauses the press ram at a set point for a dwell period before completing the stroke, using the closed center to maintain force without creep.
Choose the 4V230C-08AG when your application needs the cylinder to pause and hold position without continuous air consumption at the ends. The closed center blocks all flow, providing a firm mid-stop; if you need the rod to float freely for manual alignment, switch to the 30E exhaust-center variant. For smaller Ø20–25 mm cylinders, a 4V100 body (Cv 0.6) reduces over-sizing, while a 4V300 (Cv 1.65) better serves Ø63 mm and larger bores.
When replacing an existing valve, match five points: 4V200 body size, 5/3 closed-center function, G1/4 port thread, AC220V coil voltage, and grommet electrical entry. Single-valve mounting works for standalone stations; for multi-cylinder panels, the 4V200 manifold base saves piping and simplifies maintenance.
Quick checklist
It suits double-acting cylinders in the ~Ø32–50 mm range. The 13.6 mm² effective area (Cv 0.8) provides balanced flow for mid-speed actuation. Smaller Ø20 mm cylinders may cycle faster with a 4V100 (Cv 0.6), while Ø63 mm and larger bores benefit from the 4V300’s Cv 1.65.
Both solenoids de-energize and the spring-centered spool moves to the closed position, blocking all ports. The cylinder holds its last position, but for suspended loads a pilot-operated check valve or mechanical brake is still required as the valve alone is not a safety holding device.
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