Description
ATEX axial duct fan
The VN-Duct ATEX is an axial duct fan designed to move air and clean gases in industrial environments where potentially explosive atmospheres may occur. It is suitable for ducted ventilation and extraction applications where explosion protection is required due to the presence of flammable gases, vapours or combustible dust.
Installed directly into an air duct, the VN-Duct ATEX allows large volumes of air to be transported through a ventilation system. Its axial design makes it particularly suitable for applications requiring high airflow rates at relatively low to medium pressure differences.
When do you need an ATEX duct fan?
An ATEX duct fan is used when air or gases need to be extracted or transported through a duct system in an area where an explosion risk may be present.
Typical applications for the VN-Duct ATEX include:
- Battery charging rooms and battery storage areas
- Chemical and petrochemical facilities
- Offshore installations
- Laboratories
- Industrial production and process areas
The fan is designed for installation in duct systems. Its ATEX classification and configuration must be suitable for the hazardous area and the specific operating conditions.
Design and construction
The VN-Duct ATEX features a cylindrical fan casing with flanged connections for straightforward integration into an air duct. Its construction is designed for use in potentially explosive atmospheres and complies with the relevant requirements of ATEX Directive 2014/34/EU.
Key design features include:
- Steel fan casing with an epoxy-polyester coating.
- Optional aluminium construction in the area surrounding the impeller.
- Axial impeller with aerodynamically shaped blades.
- Adjustable blade pitch to match the required performance.
- Impeller blades made of cast aluminium or antistatic plastic, depending on the configuration.
- Aluminium impeller hub.
- ATEX-certified explosion-protected motor.
- Direct drive, with the impeller mounted directly onto the motor shaft.
The motor is available in single-phase or three-phase versions, with IP55 protection and class F insulation.
Three casing lengths available
The VN-Duct ATEX is available in three different casing lengths, allowing the fan configuration to be adapted to the available installation space and motor accessibility.
- Short version (VN-Duct ATEX S): the motor extends beyond the fan casing and remains easily accessible.
- Medium version (VN-Duct ATEX M): the motor partially extends beyond the casing, providing convenient access to the electrical connections.
- Long version (VN-Duct ATEX L): the motor and impeller are fully contained within the overall length of the fan casing.
Technical specifications VN-Duct ATEX
- Type: Axial ATEX duct fan
- Airflow capacity: up to 250,000 m³/h
- Impeller diameter: 310 to 1,600 mm
- Operating temperature: -20°C to +40°C
- Medium: Clean gases, free from dust, abrasive particles and corrosive substances
- Motor: ATEX explosion-protected asynchronous motor
- Motor protection rating: IP55
- Insulation class: F
- Power supply: 230 V / single-phase or 400 V / three-phase, 50 Hz, depending on configuration
- Drive: Direct
- Airflow direction: Standard direction from motor to impeller
- ATEX versions: Gas (G) or dust (D), category 2 or 3
The maximum airflow depends on the selected model, motor speed and resistance within the duct system. The VN-Duct ATEX is available with different motor speeds and power ratings to suit the required operating conditions.
Available versions and accessories
In addition to the different casing lengths, the VN-Duct ATEX can be supplied with various accessories to facilitate installation and integration into the duct system.
Available accessories include:
- Inlet cones for improved airflow into the fan.
- Sound attenuators.
- Protective guards for the inlet and outlet sides.
- Flexible connections suitable for ATEX applications.
- Anti-vibration mounts.
- Counter flanges.
- Mounting feet for horizontal installation.
Alternative configurations are available on request, including stainless steel or aluminium fan casings, two-speed motors and reversible airflow versions.
Selecting the right ATEX duct fan
Selecting an ATEX duct fan involves more than determining the required airflow. The operating pressure, duct dimensions, available installation space and characteristics of the potentially explosive atmosphere all need to be considered.
The fan’s ATEX classification and construction must match the requirements of the application. At Ventinet, we look at the complete operating situation to help determine the right configuration. This ensures that the selected fan is suited to both the ventilation requirements and the conditions in which it will operate.
This product is part of our range of ATEX fans, ATEX axial fans and axial fans.
