Almeva LIK Redukcja DN80/126-60/100 concentric flue reducer LPKK54

Almeva LIK Redukcja DN80/126-60/100 concentric flue reducer LPKK54 adapts a concentric stainless-steel chimney run with an outer/inner diameter of DN80/126 mm to a smaller concentric connection of DN60/100 mm. The component is intended for use in concentric flue systems to provide a secure, aligned transition between two different diameter sections while maintaining the coaxial path for combustion gases and air intake. It is suitable for installations with boilers, water heaters and other sealed combustion appliances that require matched concentric piping.

Advantages

The reducer preserves the concentric geometry of the flue system, ensuring consistent exhaust flow and correct air intake alignment for sealed combustion appliances. Constructed for compatibility with stainless-steel concentric chimney components, it simplifies resizing runs without separate inner and outer pipe handling. The part reduces installation time where a stepped diameter transition is needed and supports a neat, compact connection that maintains system integrity.

Suitable for

• Concentric stainless-steel chimney systems for boilers and condensing boilers
• Water heaters and sealed combustion appliances that require a concentric flue
• Situations where the installation requires reducing from DN80/126 to DN60/100 coaxial piping
• Indoor and enclosed flue runs where a compact, aligned transition is needed

When it may not be suitable

This concentric reducer is not intended for use in non-concentric (separate inner/outer) flue systems or where flexible, non-rigid transition pieces are required. It should not be used where the appliance manufacturer specifies a different diameter, non-concentric connection, or material other than stainless steel.

Key specifications

• Function: concentric flue diameter reduction
• Input outer/inner diameter: DN80/126 mm (outer/inner coaxial)
• Output outer/inner diameter: DN60/100 mm (outer/inner coaxial)
• Material compatibility: stainless-steel concentric chimney systems
• Application: sealed combustion appliances, boilers, water heaters

How to use

Install the reducer inline between two concentric pipe sections, aligning the outer and inner pipes to maintain the coaxial path. Ensure both mating pipes are clean and free of debris before assembly. Follow the chimney system manufacturer’s installation instructions for sealing, locking rings or clamps and any required support brackets. Verify that the reducer is oriented correctly so the airflow direction and appliance connection match the system design, and perform a final check of clearances and seals before commissioning the appliance.

What to consider before purchase

• Confirm the appliance and chimney system require a concentric DN80/126 to DN60/100 reduction
• Verify material compatibility with existing stainless-steel concentric components
• Check installation space and clearances for a concentric reducer of the specified dimensions
• Ensure compliance with local building and gas installation regulations

Usage recommendations

When installing the Almeva LIK concentric reducer, follow the chimney system manufacturer’s sealing and support instructions, use appropriate clamps or locking rings for stainless-steel connections, and have the final installation inspected or commissioned by a qualified technician to confirm safe operation.