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# Shaft system

 

 

 

The ALMEVA shaft system is a modern solution for flue gas extraction combining ecological materials with the latest trends in the flue gas industry. The system is designed to meet stringent building engineering requirements.

**Benefits**

- fire resistance 90 minutes (E190)
- easy installation
- environmentally friendly
- health protection
- possibility to replace the flue liner
- possibility of installing the system in vertical, horizontal and, with the use of elbows, inclined position

**Main characteristics of the shaft system**

- certified system according to EN 1856 – 1
- fire resistance 90 minutes (EI90)
- chimney liner exchange capability
- the system is for indoor use only and must be protected against the weather
- lightweight and compact system for fast construction
- maximum height of the structure without lifting section 30 metres
- internal shaft dimensions from 120 mm to 360 mm allow use for a wide range of appliances

**Basic system breakdown**

**ALMEVA DOUBLE ELS**  
  
Double layer chimney system with steel liner for appliances with flue gas temperature up to 200°C  
  
  
  
**ALMEVA DOUBLE KLS**  
  
Double layer chimney system with plastic liner for appliances with flue gas temperatures up to 120° C

 [  ![](https://almeva.swiss/sites/default/files/perm/image/rsht_ventilator.png)  ](https://almeva.swiss/sites/default/files/perm/image/rsht_ventilator.png)