AirTAC 4V320-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V32008BI)
The AirTAC AirTAC 4V320-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V32008BI) is a genuine 5/2-way double solenoid (memory) solenoid valve with 32008BI ports and an effective area of 28.0 mm² (Cv 1.65). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
- Valve type5/2-way
- FunctionDouble solenoid (memory)
- Port size32008BI
- Effective area28.0 mm²
- Flow (Cv)1.65
- Series4V300
About the AirTAC 4V320-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V32008BI)
The 4V320-08BI is a 5/2-way double-solenoid pneumatic directional valve from the AirTAC 4V300 series, designed to direct compressed air to double-acting cylinders and rotary actuators. This model features a memory function—the spool stays locked in its last pulsed position when power is removed, making it ideal for applications where the actuator must hold position without a continuous electrical signal. The valve comes pre-wired with a 0.5 m flying lead via a grommet entry and operates on a DC24V coil drawing just 3.0 W.
With an effective area of 28.0 mm² (Cv 1.65), the 4V320-08BI suits mid-bore double-acting cylinders in the ~50-80 mm range. Its 1/4-inch PT ports keep it compatible with common pneumatic plumbing, while the aluminum-alloy body and IP65-rated enclosure ensure reliable service in industrial environments. The spool responds in 0.05 seconds or less, and the valve can be mounted individually or ganged on a manifold base for multi-axis control.
AirTAC 4V320-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V32008BI) Technical Specifications
| Model | AirTAC 4V320-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V32008BI) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/2-way |
| Function | Double solenoid (memory) |
| Port size | 32008BI |
| Exhaust port | 32008BI |
| Effective area (Cv) | 28.0 mm² (Cv 1.65) |
| 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 | 4 cycle/sec |
| Response time | ≤ 0.05 s (activating) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Weight | 400 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 | 28.0 mm² |
|---|---|
| Flow coefficient | Cv 1.65 |
| 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 4V320-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V32008BI)
| 4V | Solenoid valve, spool type, 4-series. |
|---|---|
| 3 | Body size (4V300) — sets port & flow. |
| 2 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -32008BI | Port thread: M5 / 06=1/8" / 08=1/4" / 10=3/8" / 15=1/2". |
Related: 4V310 (single), 4V320 (double), 4V330C/E/P (5/3 center). Add the voltage suffix when ordering.
Where the AirTAC 4V320-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V32008BI) Is Used
Material Handling Gates
A pulsed signal shifts a diverter gate on a conveyor line. The double-solenoid memory holds the gate position without continuous coil power, reducing heat buildup in the DC24V coil during long sorting runs.
Clamp & Fixture Circuits
Controls a double-acting clamp on a CNC fixture. The spool stays put after the clamping pulse, so the part remains secured even if the machine e-stop drops control power—note that a pilot-operated check valve is still required for guaranteed load holding.
Press & Forming Equipment
Directs a mid-bore press cylinder through its extend-retract cycle. The 28.0 mm² effective area provides the flow capacity for crisp 0.05 s shifts, while the grommet lead-out keeps wiring tidy inside the press frame.
Is the AirTAC 4V320-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V32008BI) the Right Valve?
Choose the 4V320-08BI when your circuit needs a 5/2 double-solenoid valve that remembers its position after a pulse—this eliminates the constant signal required by a spring-return model and can simplify your control logic. The 1/4-inch port size and 28.0 mm² effective area make it a strong match for cylinders around 50–80 mm bore; if you are driving a smaller cylinder (below ~40 mm), the 4V200 series (Cv 1.0) may offer a more compact and economical fit, while larger bores above 100 mm typically benefit from stepping up to the 4V400 body (Cv 2.82).
For a drop-in replacement, match five points: body size (4V300), function (20 = double solenoid), port and thread (1/4-inch PT), coil voltage (DC24V), and electrical entry (grommet with flying lead). The grommet entry on this SKU provides a sealed DIN-style wire exit that simplifies installation in wet or dusty locations compared to a terminal box.
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 4V320-08BI Solenoid Valve, 5/2-way, PT1/4, DC24V, grommet entry (4V32008BI) FAQ
With an effective area of 28.0 mm² (Cv 1.65), this valve suits double-acting cylinders roughly in the 50–80 mm bore range. The exact speed depends on your operating pressure and cylinder stroke, but the 4V300 body provides a good balance of flow and response for mid-size pneumatic actuators.
The 4V320-08BI uses two solenoids to pulse the spool into each position. When power is removed, the spool remains in its last shifted position due to land friction and balanced pressure—there is no spring and no magnetic latching. This holds the actuator at its end-of-stroke, but it is not a safety-rated holding device. For suspended or vertical loads, you must add a mechanical brake or pilot-operated check valve at the cylinder ports.
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