Double-wall 25 mm Standard

Purpose: To remove the products of combustion from the combustion space to the atmosphere
Fuel: Oil, gas, solid (except fuel the amount of sulphur of which is ≥ 0.2% according to the mass) and solid fuel without using peat and charcoal
System marking according to EN 1856-1 
Ø 80-300 mm, T450-N1-D-Vm-L20(050-100)-G70 
Ø 350-450 mm, T450-N1-D-Vm-L20(060-100)-G105 
Ø 500-600 mm, T450-N1-D-Vm-L20(060-100)-G140 
T450°C – maximum operating temperature
N1 – natural draught
D – dry operating conditions
Vm – resistant to corrosion
G – resistance to soot fire
70;105;140 – distance to combustible materials
Flue liner - L20 – stainless steel 1.4301
Ø - 80-200 mm – 0.5; 0.6; 0.8; 1.0 mm
Ø - 250-550 mm – 0.6; 0.8; 1.0 mm
Ø - 600 mm – 0.8; 1.0 mm
The outer pipe – stainless steel 1.4301
The outer pipe – stainless steel 1.4509
The outer pipe – painted stainless steel 1.4509
Insulation – injected mineral wool, thickness -25 mm, density 180 kg/m3