SpiroFlex double-wall elbow 80/125 45° white

SpiroFlex double-wall elbow 80/125 45° white is a concentric ducting component designed for ventilation and flue systems that use 80/125 mm concentric pipes. The elbow changes the airflow direction by 45° while preserving the double-wall design to maintain thermal separation between the inner and outer conduits and to reduce noise transmission. The white finish provides a neutral appearance suitable for visible interior or utility spaces.

Advantages

The double-wall construction ensures consistent spacing between inner and outer ducts, improving thermal insulation and limiting heat transfer. The 45° angle offers a gradual change of direction to minimise pressure losses compared with sharper bends. The part is compatible with 80/125 concentric systems, allowing secure mechanical connection and stable airflow performance. Its surface finish facilitates cleaning and inspection when installed in accessible areas.

Suitable for

• Concentric ventilation and flue runs with 80/125 mm dimensions
• Residential heating and mechanical ventilation systems
• Light-commercial ductwork where a 45° directional change is required
• Installations requiring thermal and acoustic separation between inner and outer ducts

Key specifications

• Type: double-wall concentric elbow
• Angle: 45°
• Concentric dimensions: 80/125 mm
• Color/finish: white
• Material characteristics: rigid, suitable for ventilation and flue applications
• Function: change of direction with maintained thermal and acoustic separation

How to use

Fit the elbow between matching 80/125 concentric pipes, ensuring inner and outer ducts are aligned and seated fully into the mating sockets. Secure joints according to the system’s recommended method (clamps, seals or mechanical couplings) to prevent leaks and maintain concentric spacing. Verify the elbow orientation provides the required 45° directional change and check clearances before finalising installation. After assembly, inspect for unobstructed airflow and confirm sealing where necessary.

Usage recommendations

Use this elbow in systems designed for concentric 80/125 ducting and follow applicable ventilation and flue installation standards. Avoid exposing the component to mechanical damage or corrosive conditions, and perform routine inspections to ensure seals and joints remain intact for safe and efficient operation.