Concentric PP/Plastic Push-fit system
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CoxDENS with CONNEXT X3
CoxDENS with CONNEXT X3
Concentric system CONNEXT x3 push-fit
Concentric system CONNEXT x3 push-fit

CoxDENS with CONNEXT X3  
Concentric push-fit flue gas system

Preference for concentric flue gas discharge material: tube-in-tube

Cox Geelen is the specialist in flue gas systems and offers various solutions. However, preference is given to concentric systems, because the flue gas exhaust pipe is always embedded in the air supply pipe. CoxDENS® with CONNEXT X3 is our PP/plastic concentric push-fit flue gas system with CONNEXT X3 coupling and is available in the diameter 60/100 mm.

Specifications

  • Available in Ø 60/100 mm in the color white (RAL 9016). 
  • PP flue gas pipe. 
  • The outer pipe is made of plastic. 
  • The inner pipe is centered in the outer tube 'tube-in-tube' by the patented CONNEXT X3 Push-Fit coupling. 
  • Easy to shorten. 
  • The flue gas pipe is surrounded by air, an additional safety barrier. 
  • Suitable for overpressure (class H1). 
  • CE tested in accordance with EN 14471:2013 + A1:2015
concentrisch rookgasafvoer
concentrisch rookgasafvoer

Advantages

A PP flue gas pipe expands more by heat than a metal pipe. In the design of our concentric flue systems this expansion is taken into account. Expansion of the inner pipe will not cause the concentric flue system to part. In case of a leakage in the flue pipe, the fumes will flow into the air supply of the boiler. If too high a recycle content arises from CO2 (carbon monoxide), the boiler will fall on fault, thus avoiding a dangerous situation for residents.

Recommendation by Dutch Safety Board

  • Short film: Carbon Monoxide - Understimated and misunderstood danger click here.
CoxDENS with CONNEXT X3  brandwerende muurplaat
CoxDENS with CONNEXT X3 brandwerende muurplaat

Fire resistant wall plate

Cox Geelen introduces round fire resistant wall plates with integrated fire proof wall plate and fire protection seal. These innovative CoxDENS® plates were designed for connection to flexible as well as concentric flue gas systems. These revolutionairy wall plates neatly cover an opening in the wall and also provide a fire and carbon monoxide safe situation in the home. Why round? Mounting can not go crooked and the slope of 3° is included in the design read more.

Product range

  • Pipes in lengths 250, 500 and 1000 mm
  • Bend 87° and 45°
  • Bend 87° with 2 measuring points
  • Inspection piece
  • Measuring point
  • Adapter 80/80-60/100 mm
  • Fire resistant wall plate with fire protection seal
  • ECONEXT® plastic roof terminal and wall terminal
connext x3
connext x3
connext x3
connext x3
connext x3
connext x3
connext x3
connext x3
connext x3
connext x3