The evolution of the market has led Groppalli to develop a complete range of Polypropylene accessories, especially dedicated to condensing boilers, able to guarantee total resistance to the corrosion of acid condensate which inevitably occurs and ensure a notable speed and simplicity of assembly.

Exhaust ducts are specially designed for low temperature conditions of flue gases (T≤ 120°), are equipped with M-F connection system and triple Lip EPDM gaskets. Groppalli offers a wide range of diameters, both standard concentric kits and twin systems along with systems customized according to individual customer's needs.

The standard range consists of 90°-45° elbows, various pipes lengths, joints, gaskets, clamps, terminals, "T"-adapters, etc. In addition, for the recovery of existing flues, Groppalli has developed a Flexible Chimney system, easy to install and adjustable for any length.

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