Airtac 4V300 Solenoid Valve 4V330C-08-A
The AirTAC Airtac 4V300 Solenoid Valve 4V330C-08-A is a genuine 5/3-way 5/3 double solenoid — closed center solenoid valve with A 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 sizeA
- 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 4V300 Solenoid Valve 4V330C-08-A
The AirTAC 4V330C-08A is a 5/3-way double-solenoid valve with a closed center, designed to bring a double-acting cylinder to a controlled stop and hold its position. When both solenoids are de-energized, all ports are blocked, trapping air on both sides of the piston to resist movement. This AC220V model uses a terminal-box electrical entry and comes with 1/4-inch PT (Rc) threaded ports on the inlet, outlet, and exhaust.
Built on the 4V300 aluminum-alloy body, this valve provides an effective area of 21.3 mm² (Cv 1.25) and suits cylinders in the ~Ø50-80 mm range. The spool shifts in 0.05 seconds or less, and the AC220V coil draws 4.5 VA. With IP65 protection and a locking manual override, it is a reliable choice for clamping or intermediate positioning tasks.
Airtac 4V300 Solenoid Valve 4V330C-08-A Technical Specifications
| Model | Airtac 4V300 Solenoid Valve 4V330C-08-A |
|---|---|
| Series | 4V300 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Closed center |
| Port size | A |
| Exhaust port | A |
| 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 4V300 Solenoid Valve 4V330C-08-A
| 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. |
| -A | 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 4V300 Solenoid Valve 4V330C-08-A Is Used
Clamping & Fixturing
The closed-center spool blocks all ports at rest, keeping a pneumatic clamp securely engaged on a workpiece without continuous air consumption or solenoid power.
Intermediate Stop Positioning
Use the 4V330C to halt a double-acting cylinder at a mid-stroke point for a two-step pressing or assembly operation, holding the position until the next signal.
Material Handling Gates
Controls a diverter gate on a conveyor line, stopping it in a closed-center position to block product flow without drifting, then shifting to either open path on command.
Is the Airtac 4V300 Solenoid Valve 4V330C-08-A the Right Valve?
Choose the 4V330C-08A when your pneumatic circuit needs a 5/3 closed-center function on a 1/4-inch port. The closed center is ideal for stopping a cylinder mid-stroke and holding it against moderate external forces, though for suspended loads you must add a pilot-operated check valve. If your cylinder is smaller (under Ø40 mm), the 4V200 series (Cv 1.0) may offer a better size match; for larger bores above Ø80 mm, step up to the 4V400 body (Cv 2.82) for faster filling.
For a direct replacement, match five points: the 4V300 body size, the 5/3 closed-center function (30C), the 1/4-inch PT port, an AC220V coil, and the standard terminal-box entry. This valve can be mounted individually or ganged on a manifold base, making it easy to integrate into a multi-valve station.
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 4V300 Solenoid Valve 4V330C-08-A FAQ
With a Cv of 1.25 and a 21.3 mm² effective area, this 5/3 valve is well-matched to double-acting cylinders with bores from approximately 50 mm up to 80 mm. It provides sufficient flow for smooth, controlled actuation in that range.
As a double-solenoid valve, the spool stays in its last commanded position. If it was in the center (both solenoids off), all ports remain blocked, trapping air in the cylinder to hold the piston in place. If it was shifted to an end position, it will stay there. This is a friction-held memory state, not a magnetic latch.
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 4V300 Solenoid Valve 4V330C-08-A
Send us the quantity, coil voltage and destination. We confirm price, stock and lead time — usually within 7-8 hours.