Double wall stove pipe can reduce the clearance needed to combustibles in many situations and typically has a stainless steel inner wall that will provide a much loger time of service that a typical single wall setup.
Double or triple wall chimney pipe.
Less creosote accumulation is another positive feature due to the heat retention of double wall stovepipe.
Class a chimney pipe is either a double or triple wall construction.
Duraplus is a triple wall chimney system with a layer of insulation between the innermost wall and the middle wall whereas duratech is a double wall chimney system with a layer if insulation between the two metal walls.
Solid packed chimney these pipes have smaller inner diameters usually ranging from 5 inches to 8 inches that have some insulation either double wall like simpson duravent duratech pipe or triple wall like simpson duravent duraplus pipe.
For safety the single or double wall black stovepipe transitions to class a chimney pipe when it nears a wall or ceiling.
Double and triple wall insulated pipe is listed as class a vent pipe and must meet either ul standard 103 or 103ht.
Shop single double and triple wall stove and chimney pipe including simpson dura vent selkirk metalbestos amerivent metal fab security chimneys and more.
Both duratech and duraplus are tested to the same temperature 2100 degrees and clearance to combustibles on both brands is 2.
7 duraplus chimney pipe duraplus is a triple wall 2100 all fuel chimney system and is tested to ul 103 ht standards.
Ul standard 103 requires pipe capable of safety operating with an internal temperature of 1 000 degrees fahrenheit and withstanding a maximum temperature of 1 700 degrees fahrenheit.
Double wall stove pipe is used to make the connection from the chimney or chimney kit to the appliance in the final interior run.
Duraplus features two layers of insulation and is available in sizes 6 to 8.