Gas guide
- replaces two shut-off dampers (one flue gas canal is always open)
- with sealing air 100% lock as per UVV/TRD
- very high impermeability with various sealing systems without sealing air (short seal length / little sealing air consumption)
- very little pressure loss (unimpeded cross-section, vane swivels in canal recess)
- excellent flue gas redirection (slanted position of the vane)
- simple control (one drive only)
- very little maintenance required (few mechanically moving parts)
- space-saving and inexpensive design