ALNOR TWIN BEND ANGLE 45 YSVL-45-160-160 — 45° twin bend vent fitting, Ø160 mm

ALNOR TWIN BEND ANGLE 45 YSVL-45-160-160 is a metal ventilation fitting designed to create a compact 45° twin bend in round duct systems with a nominal diameter of 160 mm. The fitting redirects airflow smoothly while occupying minimal space, making it suitable for HVAC systems, exhaust lines and air distribution networks where a controlled change of direction is required. Constructed for installation in metal ductwork, the component helps route ducts around obstacles and maintain efficient air movement.

Advantages

The 45° twin bend geometry reduces flow separation and minimizes pressure loss compared with abrupt directional changes, supporting better system efficiency. Its metal construction offers durability and dimensional stability under typical ventilation conditions. The compact profile allows installation in confined spaces and simplifies duct routing without extensive additional components. The fitting is compatible with standard Ø160 mm round ducts and can be integrated into new installations or retrofit projects.

Suitable for

• HVAC ventilation branches in residential and commercial buildings
• Exhaust and supply air ducts requiring a 45° change of direction
• Projects with limited installation space where a compact bend is needed
• Retrofit work to re-route ductwork around structural obstacles

Key specifications

• Nominal duct diameter: 160 mm
• Bend angle: 45° twin bend configuration
• Material: metal (suitable for standard ventilation ductwork)
• Connection type: for round ducts with matching Ø160 mm ends
• Application: air distribution, supply or exhaust ventilation

How to use

Install the twin bend fitting into the ventilation run by inserting the matching Ø160 mm duct ends into the fitting connections and secure with appropriate clamps, seals or rivets according to national installation standards. Ensure alignment to achieve the intended 45° directional change and check that joint sealing prevents air leakage. Support the ductwork as required to avoid strain on the fitting and verify that airflow direction and clearance are correct before commissioning the system.

Usage recommendations

Ensure sealing at all joints and provide mechanical support to reduce vibration and stress. When combining with other fittings, allow for smooth transitions and maintain consistent internal diameter to minimize pressure losses. Follow local HVAC codes and manufacturer guidance for fastening and corrosion protection.