Almeva LIK Redukcja 60/100-80/125 concentric chimney reducer, model LPKK01

Almeva LIK Redukcja 60/100-80/125 concentric chimney reducer, model LPKK01 is a concentric transition piece intended to join a 60/100 mm concentric flue to an 80/125 mm concentric flue. The reducer keeps the inner and outer pipes aligned and sealed, ensuring correct flue geometry for gas and condensing boiler installations or other appliances that use concentric flue systems. Constructed for in-line installation, it provides a compact solution when a change of concentric pipe size is required.

Advantages

The concentric design preserves coaxial alignment between inner and outer ducts, reducing installation errors and preserving draft characteristics. The reducer is made to provide a secure mechanical fit and a consistent sealing surface to help prevent leakage of combustion products and condensate. Its compact shape simplifies installation in confined spaces and minimizes the need for additional adaptors.

Suitable for

• Connecting concentric flue pipes of different diameters in domestic and light-commercial heating systems
• Gas boilers and condensing boilers that require a change from 60/100 to 80/125 concentric piping
• Ventilation or exhaust arrangements where concentric flue geometry must be preserved

Key specifications

• Type: concentric chimney reducer (concentric transition)
• Input diameter: concentric 60/100 mm
• Output diameter: concentric 80/125 mm
• Function: provides aligned transition between inner and outer flue pipes
• Application: suitable for gas and condensing boiler flue systems and similar appliances
• Installation: inline connection between concentric flue sections, suitable for confined spaces

How to use

Position the reducer between the existing concentric flue sections so that the smaller 60/100 side fits onto the corresponding pipe and the larger 80/125 side receives the matching concentric pipe. Ensure both mating surfaces are clean and free of debris before assembly. Slide the reducer into place until the connection seats fully and follow the appliance or flue system manufacturer's instructions for securing joints, which may include clamps or locking features. Verify alignment of inner and outer ducts and check seals visually; perform a smoke or pressure test if required by local installation standards.

Usage recommendations

Use the reducer only in systems designed for concentric flues and with appliances approved for the specific flue sizes. Confirm compatibility with local building codes and appliance manufacturer requirements. Inspect connections periodically for signs of corrosion, condensate accumulation, or seal deterioration and service as necessary.