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Air-cooled pipe

Dura chimney II

  • “DuraChimney II is tested and listed for continuous operation at 1000°F flue gas temperatures, one hour at 1400°F and ten-minutes at 1700°F, in accordance with the UL 103 test standard.”
  • “DuraChimney II is designed to stay cool on the outside, to provide a hot draft on the inside and to provide a fire-safe design that protects both the chimney and the building.”- Duravent website.
  • 2″ clearance to combustibles.
  • “Always follow DuraVent Installation instructions enclosed with the cap or support box before installing your chimney system.”
  • At least one Elbow Strap is required. Elbow Straps ensure adequate support.
  • A storm collar is required for all installations using a flashing
  • To calculate the installed per length of 10″-16″ DuraChimney II pipe, subtract 1″ per joint
  • Be fire safe. Maintain at least 2″ clearance to combustibles. Follow local building codes and have your chimney inspected by a certified professional.

An important decision for many homeowners is what type of chimney is best for their needs. There are many different types of chimney pipes, so how can you know which type is right for you? There are many factors that determine which type of Chimney is best for you. These factors include but are not limited to type of burning fuel being used, weather conditions, the location of the fireplace in your home, available clearances, and price.

Depending on the answers to these questions will determine which type of pipe is best for you, for instance if you wanted to burn wood you would not be able to use pipe made for a B-Vent Gas fireplace, but you would need a chimney that was compatible with a wood burning fireplace.  In order to burn wood you would need a Chimney that has been tested and cleared to be used with a Wood Burning Fireplace. A common used chimney pipe is “class A” chimney pipe. Type A Chimney pipe, is a chimney system that is designed to exhaust coal, wood, oil or gas. These chimney pipes are usually a series of pipes that are either double or triple walled.

There are many brands of class A chimney pipe, but you should never mix and match brands due to differences in engineering keeping the systems from being compatible. Mixing chimney brands and/or types can also create fire hazards.

Advantages of Insulated pipe

  • Better draft, because the gases in the chimney stay hooter compared to outside air temperatures.
  • “1” Refractory insulation blanket –ensures complete insulation coverage between Inner & Outer walls, preventing any hot spots from appearing due to expansion of the metal walls during operation. Hot spots could cause a fire.” –Duravent

Advantages of air cooled pipe

  • Light weight Chimney system.
  • Less costly than Insulated pipe