The Festool 204083 CT Cyclone Dust Collection Pre-Separator CT-VA 20 is a dust collection pre-separator for Festool CT extractors. This is a dust collection pre-separator designed for capturing large volumes of dust and debris before they reach the main extractor. Model Number: 204083. It is built for tradespeople and serious shop users who want to keep suction strong, cut down on filter bag changes, and handle dusty work without loading the extractor bag right away.

The big reason this unit matters is simple: it catches up to 95% of dust before that material enters the CT dust extractor. On real jobs, that means the extractor keeps pulling hard longer because the main filter sees less load. If you do drywall sanding, concrete and silica-related work with a HEPA-certified extractor, or general cleanup after cutting and grinding, that kind of separation saves time and keeps your setup working the way it should.

Festool uses cyclone technology here to separate coarse dust and debris from the airstream before it reaches the vacuum. Instead of packing your filter bag with the heavy stuff first, the CT-VA 20 drops it into its own 5.3 gallon collection bin. That translates directly into fewer bag changes and lower running cost over time, especially for contractors who create a lot of material fast.

The design is one of the smarter parts of this system. The flat cyclone layout keeps the overall footprint compact, and the Systainer-based body fits neatly into the Festool storage and transport system. It is also tool-free, so you can switch between using the cyclone and running without it depending on the task. That flexibility is useful when one part of the day is bulk dust collection and the next is lighter cleanup.

Jobsite practicality is strong here too. The stackable container is sturdy, easy to move, and designed to travel with the rest of your extractor setup. Festool also calls out anti-static performance when used with anti-static CT series dust extractors, which matters when you are trying to keep fine dust moving cleanly through the hose and system without the annoying cling and buildup that cheaper setups can create.

Compatibility is a major selling point. The unit is intended for Festool CT 26, CT 36, and CT 48 extractors, with or without Autoclean, and supplementary data also lists compatibility with discontinued CT 22 and CT 33 models. It is approved for use with HEPA dust extractors, and when paired with a HEPA-certified CT Dust Extractor it is compliant with OSHA Table 1 for silica dust applications. It also works within the broader Festool ecosystem, including storage and selected CT accessories.

Who should buy it? Anyone already invested in a Festool CT dust extractor who is tired of burning through bags on high-volume debris. It makes the most sense for remodelers, drywall contractors, concrete and masonry users dealing with silica dust, carpenters creating a lot of chips and sawdust, and shop users who want cleaner, more efficient dust extraction. If your work creates heavy dust loads, this accessory earns its keep quickly.

A smart buy if your CT extractor is eating bags for lunch

The Festool 204083 CT Cyclone Dust Collection Pre-Separator CT-VA 20 is one of those accessories that makes a good dust extractor setup noticeably better the first week you use it.

• Who it's for: Contractors and shop users running Festool CT extractors in dusty work like drywall, concrete, remodeling, and heavy cleanup.
• Why it stands out: It keeps more debris out of the main bag, helps maintain suction, and fits the Festool storage and transport system the way it should.
• Worth knowing: This is best for high-volume dust collection. If you rarely fill extractor bags, you may not see the payoff as quickly. Also check model compatibility if you are running older CT SYS, CT MINI, or CT MIDI units.

• What does this pre-separator do? It uses cyclone separation to pull coarse dust and debris out of the airstream before that material reaches the main Festool CT dust extractor.
• Which Festool extractors is it made for? Festool lists it for CT 26, CT 36, and CT 48 extractors, with and without Autoclean. Supplementary data also lists discontinued CT 22 and CT 33 models.
• Is it OSHA Table 1 compliant? Yes, when it is used with a HEPA-certified CT Dust Extractor for applicable silica dust jobs.
• How much dust can the container hold? The maximum collection container capacity is 5.3 gallons, or 20 liters.
• Does it help reduce filter bag use? Yes. Festool states it catches up to 95% of dust before it enters the extractor, which reduces the load on the bag and main filter.