Festo VAK-1/4 Vacuum Generator 80% Vacuum 1mm Nozzle G1/4 6890

Overview
The Festo VAK-1/4 (part number 6890) is a single-stage vacuum generator from the VAK series, designed for generating vacuum in industrial automation systems. Based on the Venturi principle, compressed air flows through a Laval nozzle, creating a vacuum at the suction port for picking up and holding workpieces. This T‑shape design is particularly suited for handling smooth, non-porous workpieces in pick-and-place applications.

The generator features a 1 mm de Laval nozzle, delivering 80% maximum vacuum capacity at a supply pressure range of 1.5 to 10 bar. The integrated pneumatic ejector pulse releases the workpiece quickly and reliably when the compressed air supply is shut off. The die-cast aluminium housing offers a robust, maintenance-free construction. A maximum suction flow of 19.5 L/min enables efficient workpiece handling.

The VAK-1/4 is equipped with three G1/4 ports (compressed air supply, exhaust, and vacuum connection), making it easy to integrate into existing pneumatic systems. It operates over a wide temperature range of -20°C to +80°C and can be mounted in any position using through-holes, offering flexibility for diverse installation requirements.

The vacuum generator is free of copper and PTFE, and supports lubricated or non-lubricated operation. It complies with ISO 8573-1:2010 [7:4:4] standards, carries a corrosion resistance class (CRC) of 2, and is RoHS compliant. The generator has a shipping weight of 0.260 kg and is a commercialized product.

Key Features

• High Vacuum Performance – Delivers up to 80% vacuum capacity (maximum vacuum 80%) with a 1mm de Laval nozzle, providing efficient suction for a wide range of applications.

• Integrated Pneumatic Ejector Pulse – When the compressed air supply is cut off, the built‑in ejector pulse releases the workpiece quickly and reliably, ensuring efficient placement in pick‑and‑place cycles.

• T‑Shape Compact Design – The T‑configuration with through‑hole mounting allows flexible installation in any position, making it suitable for space‑constrained automation layouts.

• Robust Die‑cast Aluminium Housing – Durable and corrosion‑resistant construction ensures a long service life, reduces maintenance time, and withstands harsh industrial environments.

• Wide Operating Pressure Range – Operates reliably at compressed air supply pressures from 1.5 to 10 bar, accommodating different system requirements.

• Broad Temperature Range – Rated for ambient and media temperatures of -20°C to +80°C, suitable for diverse industrial environments.

• High Suction Flow – Maximum suction flow of 19.5 L/min enables fast and efficient workpiece handling, increasing system productivity.

• Maintenance‑Free Operation – No moving parts, ensuring long‑term reliability without regular maintenance, and reducing downtime.

• Copper & PTFE Free – Free of copper and PTFE, meeting environmental and material safety requirements for a broad range of applications.

• Original Brand New, Within Warranty Period – Genuine Festo product, brand new in sealed packaging, covered by manufacturer's warranty.

• 100% Satisfaction Guarantee – Your purchase is protected by our satisfaction guarantee; return or exchange if not completely satisfied.

Technical Specifications

Applications
Ideal for pick‑and‑place systems, packaging machinery, material handling, automated assembly lines, and general industrial automation requiring efficient and reliable vacuum generation for handling smooth, non‑porous workpieces. The integrated ejector pulse ensures quick release, making it particularly suitable for high‑cycle applications. When used with Festo VAS or VASB series suction cups, the generator provides a complete handling solution for transporting and repositioning workpieces. The device is widely used in factory automation, electronics assembly, food and beverage packaging, and medical device manufacturing.

Package Includes

• 1 x Festo VAK-1/4 Vacuum Generator (6890)