DW-AL

The pressure-tight version of our classic DW-FU is the perfect external chimney for modern, highly efficient oil and gas heating systems, as well as condensing units that operate at low flue gas temperatures under positive pressure. Special seals made of EPDM (up to 120°C) or silicone (up to 200°C) make the double-walled flue gas system pressure-tight up to 200 Pa, while the 32.5 mm thick mineral insulation ensures that the flue gas flow remains constant even in cool outside temperatures. Thanks to the use of high-quality V4A stainless steel, moisture in the form of condensate does not affect the flue pipe, ensuring a long service life of the system—just like all Jeremias chimneys.