AirTAC 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08B-W)
The AirTAC AirTAC 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08B-W) is a genuine 5/3-way 5/3 double solenoid — closed 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 — Closed 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 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08B-W)
The 4V330C08B-W is the external-pilot (-W) version of AirTAC's 4V300-series 5/3 closed-center valve. Its double solenoid spool switches a 1/4-inch PT-threaded body between three positions: at center, all five ports are blocked, so a connected double-acting cylinder holds its position instead of drifting. Because pilot air is supplied through a dedicated external port rather than tapped from the main line, the spool keeps shifting cleanly even when supply pressure is low or the circuit runs under vacuum.
Rated at Cv 1.25 (effective area 21.3 mm2) with a maximum of 3 cycles per second and a response time of 0.05 s or less, this 450 g aluminum-body valve suits cylinders in the ~O50-80 mm bore range. The DC24V coil draws just 3.0 W and terminates in a screw-terminal box, giving you IP65 (DIN40050) wiring integrity and simple integration into 24 V machine control panels.
AirTAC 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08B-W) Technical Specifications
| Model | AirTAC 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08B-W) |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed 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 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08B-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 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08B-W) Is Used
Position-holding press cylinders
Closed-center blocking pins an O50-80 mm double-acting press cylinder mid-stroke when both solenoids are off, while the external pilot keeps switching dependable on soft supply lines.
Low-pressure and vacuum circuits
Where the main line sits below normal pilot-feed levels, the -W external pilot port lets the 5/3 spool actuate independently of weak or vacuum-side supply pressure.
24 V control panels with terminal wiring
The 3.0 W DC24V coil and screw-terminal box drop straight into PLC-driven control cabinets on packaging and assembly machinery, manifold-mounted beside sibling valves.
Is the AirTAC 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08B-W) the Right Valve?
Choose this closed-center model when a cylinder must freeze in place whenever the solenoids are de-energised - fixture clamping and press positioning are typical. If you need the load to float instead, pick the exhaust-center 30E; for both sides pressurised, the pressure-center 30P. Below ~O50 mm bores, the 4V200 (Cv 1.0) is usually the more economical step; above ~O80 mm, move up to the 4V400 (Cv 2.82). For replacement, match all five points: 4V300 body, 30C function, 1/4-inch port with PT thread, DC24V coil, terminal entry - and confirm the -W external-pilot option, since it is not interchangeable in piping with internally piloted stock. Single valves mount directly, or group several on a shared manifold base.
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 4V330C-08 Solenoid Valve, 4V300 Series (4V330C08B-W) FAQ
Internally piloted 4V300 valves feed their pilot stage from the valve's own inlet. This -W version instead takes pilot air from a separate external port, so the 5/3 closed-center spool still shifts reliably when main-line pressure is low or the circuit runs in vacuum. No minimum pilot pressure figure is published for this option, so size your pilot supply against the valve's 0.15-0.8 MPa operating band.
With Cv 1.25 (21.3 mm2 effective area) it directs compressed air to double-acting cylinders and actuators in the ~O50-80 mm bore class at up to 3 cycles per second. Closed center blocks all ports at rest, so the cylinder stops where it was - but for guaranteed holding of a suspended or fall-hazard load, add pilot-operated check valves at the cylinder ports or a mechanical brake; the valve alone is not a certified safety device.
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Related AirTAC 4V Valves
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