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Alfa Laval Industrial semi-welded line is used when gaskets are not suitable for one of the process media. Also, the semi-welded line can take a higher design pressure compared to fully gasketed plate-and-frame heat exchangers.


  • Chemicals
  • Energy and Utilities
  • Food and Beverages
  • HVAC and Refrigeration
  • Marine and Transportation
  • Mining, Minerals and Pigments
  • Pulp and Paper
  • Steel
  • Water and Waste treatment



  • High energy efficiency – low operating cost
  • Flexible configuration – heat transfer area can be modified
  • Easy to install – compact design
  • High serviceability – easy to open for inspection and cleaning and easy to clean by CIP
  • Access to Alfa Laval’s global service network



Every detail is carefully designed to ensure optimal performance, maximum uptime and easy maintenance. Selection of available features:

  • 5-point alignment system
  • CurveFlowTM distribution area
  • ClipGripTM gasket
  • Leak chamber
  • RefTightTM sealing system
  • Bearing box
  • Fixed bolt head
  • Key hole bolt opening
  • Lifting lug
  • Lining
  • Lock washer
  • Pressure plate roller
  • Swing feet
  • Tightening bolt cover
  • Optimized Alfa Laval drain connection

Dimensional drawing

Measurements mm (inches)