The Aspiration System Dry Compact series comprises extraction walls with two-stage dry filtration for surface preparation and coating application on wood, metal and plastic products. The wall is installed in an equipped room or built into a spray booth, and several walls can be combined into a line for long products.
Two-stage dry filtration, efficiency ≥95 %Built into a room or spray boothWalls can be combined into a lineNon-sparking ventilation unitControl panel included
Extraction walls of the Aspiration System Dry Compact series are spray stations with a two-stage dry filtration system, designed for surface preparation and coating application on products made of wood, metal, plastic and other materials. The extraction system helps create a cleaner and safer working environment for the operator. The key feature of the series is its compact, modular design: the wall takes up minimal floor space, can be built into a spray booth or a room wall, and several walls can be combined into a synchronised extraction line.
Furniture and frame workshopsMetalworkingLight industry
How It Works
The ventilation unit draws in contaminated air together with paint overspray from the area in front of the wall. The painter places the product on a stand at some distance from the front of the wall. Overspray that misses the product is captured by the airflow and passes through two-stage dry filtration, and the cleaned air is discharged outdoors through the exhaust ducts, helping maintain clean air in the painter’s working area.
The first stage is a cardboard labyrinth filter, which captures most of the paint particles. Its holding capacity depends on the material: 8–12 kg/m² for standard paint, 15–20 kg/m² for zinc- and polyester-based paints, and 4–6 kg/m² for polyurethanes used in woodworking. The second stage is a PaintStop-type fibreglass filter in removable cassettes, with a paint-holding capacity of approximately 3.5 kg/m². Together, the two stages provide a filtration efficiency of over 95 %, corresponding to filtration class EU4.
Depending on operating intensity and paint consumption, filters may require replacement after approximately 500 operating hours. To minimise downtime and maintain stable airflow in the working zone, the manufacturer recommends replacing the filters of both stages at the same time.
Construction
Housing — 1.5 mm galvanised steel panels (zinc coating 8–40 µm), open front with channels for mounting the cardboard filter; wider models consist of two modules.
Ventilation unit — medium-pressure centrifugal fan in a non-sparking design with an electric motor and flexible connectors on an anti-vibration frame; wider models have two units.
Filtration — cardboard labyrinth filters with clamps and PaintStop-type fibreglass filter cassettes in the upper part of the wall.
Start/Stop control panel, electrical installation kit and set of fasteners.
Installation
The wall is installed in an equipped room, including intermittently heated premises (climatic category U3.1). The floor under the wall must be level, with a height difference of no more than ±5 mm. For operation, ductwork is required to connect the extraction wall to the ventilation unit and discharge the filtered air outdoors. Extraction walls of the Aspiration System Dry Compact series can be built into a spray booth. For example, in 2026 TWEKO designed and manufactured a wall to upgrade an existing spray booth in the Rivne region: it was built in without changing the booth structure, and its demountable construction allowed the customer to carry out the installation independently.
Exhaust ducts, power supply connection and earthing are not included in the scope of delivery or installation, but can be provided under a separate contract.
Custom Configuration
Optional galvanised steel side deflectors extend the extraction zone by 250 mm in height and 500 mm in width and keep overspray within the wall area. An airflow control system based on a variable-frequency drive reduces power consumption by up to 40% and allows the unit to be supplied from a 230 V network. A duct kit is available for connecting the ventilation unit, which can be mounted on the wall next to the extraction wall or on the floor to its right or left. The housing can also be made of steel panels with a durable powder coating in any colour.
Manufacturing time: up to 12 working days; explosion-proof version: up to 40 working days. Warranty: 12 months from commissioning. Service life before the first major overhaul: 3 years; design service life: 10 years.
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Aspiration System Dry Compact Series Extraction Walls Scope of Supply
Basic configuration*
Component
ASS-Comp-2
ASS-Comp-2.5
ASS-Comp-4
ASS-Comp-5
Construction
Wall housing made of galvanised steel panels
1 pc
1 pc
2 pc
2 pc
Set of fasteners
1 set
Ventilation
Non-sparking ventilation unit
1 pc
1 pc
2 pc
2 pc
Electric motor
1 pc
1 pc
2 pc
2 pc
Filtration
Cardboard labyrinth filter
2 pc
2 pc
4 pc
4 pc
Filter cassette with PaintStop-type fibreglass filter
2 pc
2 pc
4 pc
4 pc
Control
Control panel
1 pc
* The scope of supply is given for the basic configuration and may vary depending on the customer’s technical specification.
Aspiration System Dry Compact Series Extraction Walls Technical Specifications
Basic configuration*
Parameter
ASS-Comp-2
ASS-Comp-2.5
ASS-Comp-4
ASS-Comp-5
Dimensions
Overall dimensions (L×W×H), m
2 × 0.6 × 2.1
2.5 × 0.6 × 2.1
4 (2 + 2) × 0.6 × 2.1
5 (2.5 + 2.5) × 0.6 × 2.1
Extraction opening (W×H), m
2 × 2
2.5 × 2
4 (2 + 2) × 2
5 (2.5 + 2.5) × 2
Effective filter area, m²
3.8
4.8
7.6
9.6
Ventilation
Airflow capacity, m³/h
6,500
8,000
13,000
16,000
Air velocity in the working zone (500 mm from the filters), m/s
0.25–0.4
Motor power, kW
3
4
2 × 3
2 × 4
Electricity
Power supply
3-phase, 380 V, 50 Hz
* Specifications are given for the basic configuration.
