AirTAC Pneumatics
AirTAC 4V Series Solenoid Valves
The AirTAC 4V series is a range of 5-port pilot-operated solenoid directional control valves for double-acting cylinders, spanning four body sizes from M5 to PT1/2 ports.
inventory_2627 models availableSeries Overview
The AirTAC 4V series comprises internally pilot-operated 5-port directional control valves designed to drive double-acting pneumatic cylinders. The range covers four body series - 4V100, 4V200, 4V300 and 4V400 - scaling from small-bore actuators with M5 ports up to large-bore cylinders requiring PT1/2 ports and higher flow. Operating pressure is 0.15-0.8 MPa using filtered 40 um air, with an operating temperature of -20 to +70 C.
Variants are defined by a two-digit function code. The x1x suffix is a 5/2 single-solenoid spring-return valve, while x2x is a 5/2 double-solenoid memory valve that holds its last position when de-energized. The x3x suffix provides 5/3 three-position control with closed-centre, exhaust-centre or pressure-centre options. Standard coils include an LED indicator with surge suppression and a manual override for setup testing. Available voltages include DC24V, DC12V, AC110V, AC220V and AC24V.
A key design detail is that these are directional valves, not flow controllers. Cylinder speed must be regulated by separate one-way flow controllers at the cylinder ports. Additionally, a 5/3 closed-centre valve stops airflow but a pneumatic cylinder will still drift under load. For true mid-stroke holding, a mechanical rod lock or pilot-operated check valves are required.
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Typical Applications
Automated Assembly Lines
General-purpose 4V200 valves with PT1/8-PT1/4 ports drive double-acting actuators for part clamping and pick-and-place operations at standard cycle rates.
Material Diverters
5/2 double-solenoid 4V valves hold diverter arms in the last position during power loss, preventing product jams on conveyor belts.
Large Box Erectors
High-flow 4V400 valves with PT3/8-PT1/2 ports rapidly fill large-bore cylinders to erect and seal heavy packaging containers.
Multi-Actuator Machinery
Multiple 4V series valves mounted on a shared manifold base provide compact, high-density directional control for complex sequencing tasks.
How to Choose the Right Model
Size the valve to the cylinder bore and required speed. A larger bore or faster stroke needs a larger body (4V300 or 4V400) to provide adequate flow. Under-sizing the valve starves the cylinder and slows the stroke. Choose the function based on failure mode: 5/2 single solenoid returns the cylinder home on power loss, 5/2 double solenoid holds the last position, and 5/3 closed-centre attempts to stop mid-stroke. Confirm exact response time and Cv flow from the datasheet.
Confirm these 5 points before ordering: body size (flow vs cylinder bore), function (single, double, or 5/3 centre type), port thread (M5, PT1/8, PT1/4, PT3/8, PT1/2), coil voltage, and mounting type (individual vs manifold base). If you need to control a single-acting cylinder, step out of this series to the AirTAC 3V 3-port valves. For bulk multi-actuator control, mount multiple 4V valves on a shared manifold base.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and available mounting space
- ✓ Port / thread type (PT / NPT / G)
- ✓ Sensor / magnet option (-S)?
- ✓ Side load — consider a guided model
Frequently Asked Questions
The 4V series operates on filtered 40 um air at a pressure range of 0.15-0.8 MPa. The operating temperature spans -20 to +70 C. Confirm the exact minimum pilot pressure for your specific body size from the datasheet.
Choose a 5/2 single-solenoid (x1x) for a simple spring return to home upon power loss. Choose a 5/2 double-solenoid (x2x) when the cylinder must hold its last position when de-energized. Choose a 5/3 three-position (x3x) valve when you need a closed-centre, exhaust-centre or pressure-centre state.
No. A 5/3 closed-centre valve blocks airflow to stop the cylinder, but a pneumatic cylinder will still drift or creep under load. It is not a mechanical lock. For true load holding, use a separate rod lock or pilot-operated check valves.
No. The 4V series are directional control valves, not flow controllers. Cylinder speed must be set using separate one-way flow (speed) controllers installed directly at the cylinder ports.
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