Duct elbow ALNOR BP-100-90 pressed 90° (BP-100/90) for ventilation

Pressed 90° duct elbow ALNOR BP-100-90 (BP-100/90) for ventilation is a metal fitting engineered to change the airflow direction in circular ductwork. It is intended for use in ventilation and HVAC systems where a right-angle turn is required while preserving duct continuity and minimizing leakage. The pressed construction provides a smooth internal surface and consistent external profile suitable for installation in residential, commercial, or light industrial ventilation networks.

Advantages

The pressed 90° elbow offers a compact design that reduces the space needed for directional changes compared with multi-piece assemblies. Its single-piece pressed form improves air passage by maintaining a smooth internal contour, which helps limit pressure losses and turbulence. The metal construction ensures mechanical strength and dimensional stability, and the standardized round connections enable quick coupling with matching circular ducts and accessories.

Suitable for

• Changing airflow direction by 90° in round duct ventilation systems
• Residential HVAC installations such as kitchen and bathroom exhausts
• Commercial ventilation runs in offices, retail spaces, and light industrial areas
• Connecting sections of circular ductwork where a compact elbow is required

Key specifications

• Material: pressed metal construction suitable for ventilation use
• Shape: 90° elbow for circular ducts
• Connection type: round duct connections designed to match corresponding duct diameter
• Surface: smooth internal contour to reduce airflow resistance
• Application: indoor HVAC and ventilation systems

How to use

Fit the elbow between two matching-diameter circular duct sections, ensuring ends are properly seated and aligned to maintain a continuous airflow path. Secure the connections using appropriate clamps, rivets, or sealants as required for the installation standard being followed. Check for alignment and mechanical support to avoid undue stress on the duct run and to maintain the intended airflow direction.

Usage recommendations

When installing the pressed 90° elbow, verify that the duct diameter matches the elbow connection to ensure a tight fit. Use appropriate sealing and fastening methods to prevent air leakage and support the assembly to avoid sagging. Allow sufficient access for maintenance and inspection at bends, and consider overall system layout to minimize excessive turns that increase pressure drop.