The VICI AT90 Air Actuator is a compact, high-performance pneumatic actuator engineered for two-position (2-pos)rotary valve control in analytical instrumentation and process automation systems. Its close-mount body design allows direct coupling to compatible valves, reducing dead volume and optimizing sample integrity — especially in chromatography-grade systems.

Rated for elevated temperature service, the AT90 actuator is ideal for applications where thermal stability and switching accuracy are critical. Its 90° rotation provides smooth, positive valve positioning, while the 3- or 4-port actuation layout enables flexible integration with complex flow switching circuits.

Manufactured by Valco Instruments (VICI), this actuator is widely used in GC systems, analyzer shelters, gas sample panels, and R&D equipment where rapid, repeatable process switching is required.

✅ Technical Specifications

• Manufacturer: VICI (Valco Instruments Co. Inc.)

• Part Number: AT90

• Reference Number: 39986

• Actuation Type: Pneumatic rotary

• Positions: 2-position (2-pos)

• Rotation: 90°

• Mounting: Close-mount valve assembly

• Temperature Rating: High-temperature compatible

• Ports: 3- or 4-port configuration (varies by setup)

• Application Compatibility: Analytical valves, sampling, flow selection

🧪 Typical Applications

• Gas chromatography (GC)

• Process analyzer sample switching

• Chemical process flow selection

• Fuel gas routing

• Multi-stream selection panels

• Pilot & lab R&D equipment

💡 Benefits

• Excellent thermal stability for heated analytical systems

• Close-coupled design minimizes dead volume

• Compact footprint for panel-dense environments

• Proven reliability in continuous duty cycles

• Fast, repeatable switching response