Piab has a wide experience in various applications and industries, from pick and placing small candies to large heavy boxes. They also aim to reduce your energy consumption and improve your working environment.

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Piab COAX Vacuum System


A forerunner within air-driven vacuum technology

COAX is an advanced solution for creating vacuum with compressed air. Based on Piab’s multistage technology, COAX cartridges are smaller, more efficient and more reliable than conventional ejectors, which allow for the design of a flexible, modular and efficient vacuum system. A vacuum system based on COAX technology can provide you with several times more vacuum flow than conventional systems, allowing you to increase speed with high reliability while reducing energy consumption with up to 50%.


How COAX Works

When compressed air (1) passes through the nozzles (2), air is pulled through with the stream of compressed air. Suction will be generated at the opening of each stage (3), resulting in vacuum.

Spec Sheet

COAX cartridges exist in a 3-stage or 2-stage design in different sizes (MICRO, MINI and MIDI) and in several characteristics (Si, Xi, Ti and Bi/Pi) making them suitable for many applications. The technology ensures excellent performance at both low and high feed pressures (0.18-0.6 MPa, [26-87 psi]). Some cartridges are available in both 3-stage and 2-stage designs. The 3-stage is for increased vacuum flow and faster evacuation and the 2-stage is more economical and for applications where size and weight are factors.

The graphs represent ejectors that are equal in nozzle diameter-compressed air consumption.

Catalog Request
Piab Catalog

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Piab Applications

Conusmer Foods

Bag lifting, cartoning machines, carton erectors, rotary cartoners, palletizing/depalletizing, handling of flexible packages.


Robot pick and place, blister packaging, vacuum drying, powder and tablet conveying, carton erecting, product/bags lifting, labeling, palletizing, bag opening.


Metal stamping/press transfer, body assembly, windshield assembly, injection moulding, ergonomic lifters, liquid filling.


Surface mounting PCB, vacuum holding measuring, leak testing, display assembly, calibration.


Feeder, decurler, delivery, folding, bookbinding, glue binder, stitching, saddle stitching, inserters, die cutting, palletizing.

Chemical and plastics

Injection moulding, thermo/vacuum forming, vacuum holding during machine operations, vacuum laminations, evacuation of molds, degassings, evaporation, conveying.

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Catalogs & Videos

Literature downloads and videos for all Piab products.

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