Semi-Welded heatexchangers 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.
Advantages
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
