The AirTAC Airtac 4V Solenoid Valves 4V230C-08AT is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 08AT 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 AirTAC 4V230C-08AT is a 5/3-way double-solenoid pneumatic valve that directs airflow to double-acting cylinders and actuators, adding a defined center position. When both solenoids are de-energised, the closed center blocks all ports, trapping air on both sides of the cylinder to hold the piston in place—ideal for mid-stroke stops where drift is unacceptable.
This NPT-threaded model runs on an AC220V coil drawing 4.5 VA and belongs to the 4V200 body class, with an effective area of 13.6 mm² (Cv 0.8). It suits double-acting cylinders roughly Ø32–50 mm and responds in 0.05 s or less. The aluminium-alloy body weighs 360 g, carries an IP65 protection rating, and includes a locking manual override for setup and maintenance.
| Model | Airtac 4V Solenoid Valves 4V230C-08AT |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 08AT |
| Exhaust port | 08AT |
| 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. |
| -08AT | 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.
Holds a clamp cylinder at an intermediate position for delicate assembly or gluing operations where full extension would damage the part.
Controls a pneumatic gate on a conveyor line, stopping the cylinder mid-travel to hold a part in position for inspection or labelling.
Positions a double-acting actuator at a precise mid-point in a lab test fixture, holding the load steady while measurements are taken.
Choose this 5/3 closed-center valve when your application requires the cylinder to pause and hold position mid-stroke without creep. If your cylinder is smaller (below Ø32), the 4V100 series (Cv 0.6) may be a better match; for larger bores or faster cycle times, step up to the 4V300 (Cv 1.65). The 4V230C-08AT gives you NPT 1/4 ports and an AC220V terminal-box coil.
When replacing an existing valve, match five points: confirm the 4V200 body size, verify the 5/3 closed-center function (30C), check that the port size and NPT thread match your plumbing, ensure the coil voltage is AC220V, and confirm the terminal-box electrical entry. This valve also mounts on a standard 4V200 manifold base for multi-station assemblies.
Quick checklist
With an effective area of 13.6 mm² (Cv 0.8), this 5/3 valve is well-matched to double-acting cylinders in the Ø32–50 mm range for typical industrial cycle rates. For a Ø63 mm cylinder or a high-speed application, moving to a 4V300-series valve (Cv 1.65) will give you faster filling and shorter cycle times.
When both solenoids are de-energised—whether intentionally or due to a power failure—the spool moves to the center position and blocks all ports. This traps compressed air on both sides of the cylinder, causing the piston to stop and hold its current position. Note that for a suspended load, a pilot-operated check valve or mechanical brake should be added for guaranteed holding.
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