Double Wall Chimney System

RTKD double wall chimney systems are usually used for heating, steam, and hot oil boilers and for process or hood systems, through which high-temperature gases flow. The system is double-walled; rock wool insulation is inserted between the walls. It has low thermal conductivity since the heat of the chimney gas is not considerably transferred to the environment, the chimney efficiency is high. It is manufactured with continuous TIG or PLASMA welding. The chimney connections are male-female joints and tightened with a stainless steel clamp from outside. The system is designed to compensate for the expansion of the inner wall due to high chimney gas temperatures. The chimney modules are manufactured in standard diameters between Ø80 mm to Ø1200 mm.

Type Double Wall Stainless Steel Chimney System

CE Classifications

T300-N1-W-V2-L50(040-300)O60

T300-N1-D-V2-L50(040-300)G100

Working Temperature 300 °C 

Corrosion Class V2

Pressure Class N1 (Negative Pressure 40 Pa)

Usage of Application Wet (W) and Dry (D) systems

Material Inner wall Stainless Steel (316L / 1.4404)

Outer wall Stainless Steel (304 / 1.4301)

Insulation 30-50mm Mineral wool

Welding Seam TIG/PLASMA continuous

Connection Form Male-female connection with clip

Seal Material -

Unintentionally Contact Must be under the protection

Freeze-Thaw Resistance Yes

Soot Fire Resistance Yes

Average Roughness 1mm