Impact UK Office: +44 (0)116 2448855   |      Impact US Office: (619) 642-8649   |   Contact Us

Zigzag Air Classifier

The Zigzag Air Classifier waste sorting system is the very latest version of the hugely popular zigzag separation technology, found in operation in many waste recycling facilities around the world.

Solution Overview

Impact recognises the industry requirements of ensuring a high-quality waste stream, so has further engineered a successful separation solution which greatly improves the separation of valuable recyclable materials while providing the operator with a low maintenance and hassle-free system.

Combining our highly skilled in-house engineering team, 3D modelling software and working in conjunction with our carefully selected external supplier base, the ZAC800 boasts impressive resistance to abrasive materials, less moving parts and the very latest fitration technology, whilst maintaining its exceptional separation efficiency.

Utilising density separation by the power of air, the ZAC800 is specially engineered for processing of glass rich or highly abrasive sub 100mm material streams, constructed from carefully selected materials ensuring exceptional durability. The Zigzag cascade enclosure includes hardened chromium cast plates to greatly reduce wear from glass.

Advanced Separation Technology

Zigzag material separation technology is used to separate light weight material particles from heavier particles by cascading the mixed in-feed material through an upwards travelling air stream inside a zigzag shaped enclosure.

An upwards travelling airstream collects the lightweight material particles, allowing separation or grading of feedstock. Heavier material particles are not affected by the airstream and discharge at the bottom of the zigzag enclosure.


The zigzag air classification technology is ideally suited to low moisture, free flowing, consistently sized material particles up to approximately 60mm in size, where there is a noticeable difference in the product density or weight (i.e. separation of lightweight paper, film, dust and plastic from heavier stone, glass or metal).

Try Before You Buy…

Order Your Free Testing Kit Now!

Run your own mixed waste through our test facility to see real results. Send your sample and we’ll carry out a live demonstration in person or online.

Valuable Material Recovery


• High quality material stream ouput using state of the art combined technologies
• Minimal downtime due to easy access split access feature
• Long-life wear plates and rubber blades
• Maximised throughput of a variety of material due to Filtersep engineering
• Easy operation with full colour 10” HMI user interface

Visit our Material Recovery Test Facility, centrally located in Leicester, with a sample of your material, and see the separation process for yourself.

This is proving to be a popular option to try before you buy. Click here to find out more.

“The ZAC800 is proving to be the ultimate separation solution with an extremely impressive ROI. The system has recently provided P&D Material Recovery with a 5 month ROI and they are over the moon with the outcome!”

Dave Lansdell
Impact’s Technical Sales Director

Case Study

SRF Refinement and Recovery

A waste treatment facility which processes industrial, commercial and residual household wastes to generate a Solid Recovered Fuel (SRF) needed an improved method of cleaning their output material stream, so contacted Impact.

Glass & RDF Recovery at MRF Residue Plant

P&D Materials Recovery (PDMR) Ltd began the operation of a purpose-built bespoke recycling plant during August 2017 following 24 months of research & development and design.

New and Improved Glass Recovery

The new and enhanced Zigzag Air Classifier 800 (ZAC800) was the system of choice for resource recovery giants, Republic Services at its Anaheim site in California, USA.