AirTAC 4V330E-08 Solenoid Valve, 4V300 Series (4V330E08BI-W)
The AirTAC AirTAC 4V330E-08 Solenoid Valve, 4V300 Series (4V330E08BI-W) is a genuine 5/3-way 5/3 double solenoid — exhaust center solenoid valve with W ports and an effective area of 21.3 mm² (Cv 1.25). 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 — Exhaust center
- Port sizeW
- Effective area21.3 mm²
- Flow (Cv)1.25
- Series4V300
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the AirTAC 4V330E-08 Solenoid Valve, 4V300 Series (4V330E08BI-W)
The 4V330E08BI-W is the external-pilot (-W) version of AirTAC's 4V300-series 5/3 exhaust-center valve, built for 1/4" PT ports and wired for DC24V through a grommet entry with a 0.5 m pre-attached lead. Instead of tapping pilot air internally from the main line, this variant draws it from a dedicated external pilot port, so the spool keeps switching cleanly even where main-line pressure is low or running under vacuum and low-pressure conditions. Both work ports are exhausted at center position, letting a double-acting cylinder float free so it can be positioned by hand or drift under external force.
Rated at 21.3 mm2 effective area (Cv 1.25) with a 3 cycle/sec maximum switching rate, this 450 g body class suits cylinders in the ~O50-80 mm bore range. The 3.0 W DC24V coil, sub-0.05 s response and IP65-rated construction make it a fit for compact control cabinets and machines that cycle through their shift without requiring line lubrication.
AirTAC 4V330E-08 Solenoid Valve, 4V300 Series (4V330E08BI-W) Technical Specifications
| Model | AirTAC 4V330E-08 Solenoid Valve, 4V300 Series (4V330E08BI-W) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Exhaust center |
| Port size | W |
| Exhaust port | W |
| Effective area (Cv) | 21.3 mm² (Cv 1.25) |
| 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 | 450 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 | 21.3 mm² |
|---|---|
| Flow coefficient | Cv 1.25 |
| 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 4V330E-08 Solenoid Valve, 4V300 Series (4V330E08BI-W)
| 4V | Solenoid valve, spool type, 4-series. |
|---|---|
| 3 | Body size (4V300) — sets port & flow. |
| 3 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -W | 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 4V330E-08 Solenoid Valve, 4V300 Series (4V330E08BI-W) Is Used
Vacuum and Low-Pressure Circuits
With pilot air supplied separately through the external pilot port, the 4V330E08BI-W shifts dependably on lines where supply pressure is too weak or inconsistent to drive an internally piloted spool - typical in vacuum handling and low-pressure test rigs.
Manual Repositioning Stations
Exhaust-center behavior unclamps both cylinder ports at mid-position, so operators can slide or jog an O50-80 mm double-acting actuator by hand between automated strokes on assembly fixtures and light machine tools.
Compact DC-Powered Panels
The grommet entry with its 0.5 m flying lead plugs straight into a DC24V control cabinet without extra wiring work, and the 3.0 W coil keeps the 24 V power budget light in multi-valve panels.
Is the AirTAC 4V330E-08 Solenoid Valve, 4V300 Series (4V330E08BI-W) the Right Valve?
Choose this exhaust-center 5/3 when your actuator must be unpressurized and free to move at mid-position - for example, a slide an operator repositions manually between automatic cycles. If you need the cylinder to freeze in place at center instead, pick the 30C closed-center variant; if you need both sides held under pressure, the 30P pressure-center is the one. Where the bore drops below the ~O50-80 mm range, the 4V200 (Cv 1.0) covers the smaller class, while the 4V400 (Cv 2.82) handles larger bores.
When ordering a replacement, match all five points: 4V300 body, the 30E exhaust-center function, the 08 port with PT thread, DC24V coil, and grommet entry - and don't forget the -W suffix, since an internal-pilot 4V330E-08BI will not behave identically in a low-pressure circuit. One valve works stand-alone; a base-mounted row of them forms an integrated manifold group.
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 4V330E-08 Solenoid Valve, 4V300 Series (4V330E08BI-W) FAQ
It directs compressed air to double-acting cylinders and actuators in the ~O50-80 mm bore class, offering 21.3 mm2 effective area (Cv 1.25) and a 3 cycle/sec maximum frequency. The -W external-pilot design feeds the pilot stage from its own port rather than the main line, so switching stays reliable when supply pressure is low or the circuit runs under vacuum - a condition that would leave an internally piloted valve unable to shift.
At center, both cylinder ports vent to exhaust, so a double-acting cylinder is free to move by hand or under outside force - useful for manual setup, but not a holding function. Never rely on this valve to support a suspended or hazardous load on its own; fit a pilot-operated check valve at the cylinder ports or a mechanical brake where guaranteed load holding is required. At the other two positions, the solenoid pulses set the stroke ends, and the spool stays there without holding current.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC 4V Valves
Request a Quote for AirTAC 4V330E-08 Solenoid Valve, 4V300 Series (4V330E08BI-W)
Send us the quantity, coil voltage and destination. We confirm price, stock and lead time — usually within 7-8 hours.