Almeva flue elbow 45° 60/100 LIK (LPBK45) concentric chimney bend

Almeva LIK 45° flue elbow 60/100 concentric chimney bend is designed to redirect the flow of combustion gases and intake air in concentric balanced-flue systems by 45 degrees. Made for twin-wall concentric ducts with a 60 mm inner pipe and 100 mm outer pipe, this elbow provides a compact means of changing direction in installations for gas boilers, heaters and fireplaces without requiring separate intake and exhaust lines. The component integrates the inner exhaust and outer air intake paths within a single prefabricated bend to maintain correct flow geometry and ensure reliable venting and combustion air supply.

Advantages

The concentric 45° elbow reduces installation complexity by combining intake and exhaust in one component and minimizes the number of joints needed to achieve directional changes. Its geometry is suited to tight installation spaces where a gradual offset is required, and it preserves the alignment of inner and outer ducts to help maintain system performance. As a purpose-made fitting for 60/100 systems, it ensures a consistent fit and sealing interface with compatible Almeva concentric components.

Suitable for

• Balanced-flue gas boilers and wall-hung boilers with 60/100 concentric flue connection
• Room-sealed heaters and gas fireplaces using concentric ducting
• Routing flue runs around obstacles where a 45° deviation is needed
• Short offsets close to the appliance or in external chimney assemblies

Key specifications

• Type: concentric 45° elbow for balanced flue applications
• Inner diameter: 60 mm (exhaust path)
• Outer diameter: 100 mm (air intake path)
• Angle: 45 degrees
• Material and finish: manufactured for use in gas appliance flue systems (compatible with Almeva concentric ducts)

How to use

Install the elbow inline with the concentric duct run so that the inner and outer pipes remain correctly oriented toward the appliance and terminal. Push-fit or connect the elbow to adjacent concentric sections according to the system manufacturer's assembly instructions, ensuring seals and locking features are engaged where provided. Verify that the elbow's 45° deviation produces the intended routing without creating undue stress on connected components, and check clearances to nearby combustible materials and building structures.

Usage recommendations

Use this concentric 45° elbow only with compatible 60/100 concentric components and follow local regulations and the appliance manufacturer's instructions for flue routing, clearances, and sealing. After installation, perform a system check for proper draft and gas appliance operation; periodic inspection of joints and seals is recommended to maintain safe operation.