Single wall rigid PPs
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Cox Geelen CoxDENS PPs
Cox Geelen CoxDENS PPs


CoxDENS® PPs is a single wall PP flue gas system and is available in diameters 60, 80, 100, 110, 125, 160 en 200 mm. The product range comprises a wide range of pipes , bends and other components. The CoxDENS® PP can be used for oil-fired and gas-fired fan flued condensing heating boilers with a maximum flue gas temperature of 120 °C (T120). By also using the CoxDENS® PPs for air supply for combustion a greater efficiency and an aesthetically better result can be achieved.


  • Made of Flame retardant PolyPropylene.
  • Resistant up to temperature of 120 °C.
  • Operates in negative and positive pressure modes.
  • Depending on local markets, available in diameters (mm) 60, 80, 100, 110, 125, 160 and 200.
  • System approval 5000 Pa (klasse H1).
  • CE approval according European standard EN 14471:2013.
  • Certified according to UL S636.
PDF - Brochure CoxDENS® PPs

45 kg pull safe with the locking clamp

Create a pull safe pipe connection for situations where regular inspection of the flue system is not possible, for territories where this is a legal requirement or just for that extra peace of mind.
The Cox Geelen locking clamp creates a pull safe connection between two CoxDENS PPs flue components. Tested and certified according to the ULC-S636, the Cox Geelen locking clamp can withstand a force of 45kgf (≈0,45kN).
Cleaver engineered, the Cox Geelen locking clamp is safe, simple to install and esthetical pleasing. Watch the installation video for an impression (not available yet).

The Cox Geelen locking clamp is available in (mm) 60, 80, and 110.