Semi-Welded exchangers are two plates laser welded together to form a cassette.

The advantage of this construction is that, one side of the cassette is a sealed welded channel, whilst the other is a traditional gasketted plate channel making assembly and cleaning of this site easier. 


  • Laser welded plates
  • Safe operation without leaking
  • High working pressure
  • Can be used for evaporators and condensers
  • Suitable for NH3
  • Minor gasket area
  • Small liquid volume