AirTAC 4V230C-08BI Solenoid Valve, 5/3-way, closed center, PT1/4, DC24V, grommet entry (4V230C08BI)
The AirTAC AirTAC 4V230C-08BI Solenoid Valve, 5/3-way, closed center, PT1/4, DC24V, grommet entry (4V230C08BI) is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with 230C08BI 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.
- Valve type5/3-way
- Function5/3 double solenoid — Closed center
- Port size230C08BI
- Effective area13.6 mm²
- Flow (Cv)0.8
- Series4V200
About the AirTAC 4V230C-08BI Solenoid Valve, 5/3-way, closed center, PT1/4, DC24V, grommet entry (4V230C08BI)
The 4V230C-08BI is a 5/3-way double-solenoid valve that directs compressed air to double-acting cylinders with a critical safety-oriented behavior: when both solenoids are de-energized, the spool centers and blocks all ports. This closed-center configuration locks the cylinder in place, preventing drift under load—ideal for holding a clamp or vertical axis at mid-stroke without continuous air consumption.
This model arrives pre-wired with a 0.5 m flying lead via a grommet entry and a 3.0 W DC24V coil, ready to connect directly to your control system. Built on the 4V200 aluminum body with 1/4in PT ports, it delivers a Cv of 0.8 and an effective area of 13.6 mm², suiting double-acting cylinders in the ~32–50 mm bore range. Its spool shifts in 0.05 seconds or less, and the IP65-rated enclosure keeps moisture and dust out of the coil and wiring junction.
AirTAC 4V230C-08BI Solenoid Valve, 5/3-way, closed center, PT1/4, DC24V, grommet entry (4V230C08BI) Technical Specifications
| Model | AirTAC 4V230C-08BI Solenoid Valve, 5/3-way, closed center, PT1/4, DC24V, grommet entry (4V230C08BI) |
|---|---|
| Series | 4V200 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | 230C08BI |
| Exhaust port | 230C08BI |
| 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.
Flow & Coil Options
| 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.
Model Code: AirTAC 4V230C-08BI Solenoid Valve, 5/3-way, closed center, PT1/4, DC24V, grommet entry (4V230C08BI)
| 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. |
| -230C08BI | 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.
Where the AirTAC 4V230C-08BI Solenoid Valve, 5/3-way, closed center, PT1/4, DC24V, grommet entry (4V230C08BI) Is Used
Mid-Stroke Clamping
Holds a pneumatic clamp at a precise intermediate position on a fixture, then releases. The closed center blocks cylinder movement, so the part stays locked even if supply pressure fluctuates.
Vertical Axis Hold
Controls a lift-and-lower cylinder on a packaging line. Stopping the cylinder mid-travel with the 4V230C-08BI prevents the load from drifting downward, adding a layer of control between powered moves.
Three-Position Actuator
Drives a diverter gate to left, center, and right positions. The 5/3 closed center gives a solid mechanical stop at the middle, routing product flow without needing a separate hard stop.
Is the AirTAC 4V230C-08BI Solenoid Valve, 5/3-way, closed center, PT1/4, DC24V, grommet entry (4V230C08BI) the Right Valve?
Choose the 4V230C-08BI when your application demands a defined stop-and-hold at the cylinder's center position without relying on constant power. If you only need end-to-end cycling, a 5/2 model like the 4V210 or 4V220 offers a higher Cv of 1.0 and a faster 5 cycles/sec. For smaller cylinders below 32 mm bore, stepping down to the 4V100 series (Cv 0.6) reduces air consumption; for larger bores needing faster fill, the 4V300 (Cv 1.65) is the next step up.
When replacing an existing valve, match all five points: confirm the 4V200 body size, the 5/3 closed-center function (30C), the 1/4in PT port, a DC24V coil, and the grommet-style electrical entry. This valve can be mounted on a manifold base alongside other 4V200 units, simplifying air and electrical distribution in multi-station setups.
Quick checklist
- ✓ Required flow (Cv) for cylinder & speed
- ✓ Function: single / double / 5-3 center
- ✓ Coil voltage (DC24 / AC220 …)
- ✓ Port thread (M5 / 1/8 / 1/4 / 3/8 / 1/2)
- ✓ Single valve or manifold base?
Installation & Wiring Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 0.8 MPa operating pressure.
- check Match coil voltage to your controller output.
- check Use the manual override to test before powering.
- check Fit silencers or fittings to the exhaust ports.
- check Wiring by qualified personnel per AirTAC docs.
AirTAC 4V230C-08BI Solenoid Valve, 5/3-way, closed center, PT1/4, DC24V, grommet entry (4V230C08BI) FAQ
With a Cv of 0.8 and 13.6 mm² effective area, it pairs well with double-acting cylinders in the ~32–50 mm bore range for general cycling. It can physically fit larger cylinders, but cycle speed will be slower than a 5/2 valve with Cv 1.0. For very small cylinders, a 4V100 series valve prevents over-sizing.
In the closed-center position, all cylinder ports are blocked. The piston is trapped and the cylinder resists external movement. This is different from exhaust center (ports vented, cylinder floats) or pressure center (both sides pressurized, creating a force balance). Choose closed center when you need to hold position against a shifting load.
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Related AirTAC 4V Valves
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