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Alfa Laval Industrial semi-welded line is used when gaskets are not suitable for one of the process media. The semi-welded line can also withstand a higher design pressure compared to fully gasketed plate-and-frame heat exchangers. Suitable for a wide range applications, this model is available with a large selection of plate and gasket types.
ApplicationsALFA LAVAL, IndustrialLine HEAT EXCHANGER, T20 W

  • 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

Benefits

  • 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

Features

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

  • 5-point alignment system
  • Reinforced hanger
  • Chocolate pattern distribution area
  • Glued gasket
  • Clip-on gasket
  • Leak chamber
  • RefTightTM sealing system
  • Bearing box
  • Fixed bolt head
  • Key hole bolt opening
  • Lifting lug
  • Lining
  • Lock washer
  • Pressure plate roller
  • Tightening bolt cover
  • Optimized Alfa Laval drain connection

Technical data

Plates
Name: T20-BW
Type: Semi-welded
Free channel, mm (inches): 2.5 (0.098)

Name: T20-MW
Type: Semi-welded
Free channel, mm (inches): 4.0 (0.16)

Materials
Heat transfer plates: 304/304L, 316/316L, 904L, 254
C-22, C-276, C-2000, D-205
Alloy 33, Ni, Ti, TiPd

Field gaskets: NBR, EPDM, FKM
Ring gaskets:  NBR, EPDM, FKM, FEPM, PTFE, CR
Flange connections:  Carbon steel, Metal lined: stainless steel, titanium

Frame and pressure plate: Carbon steel, epoxy painted

Other materials may be available on request. All option combinations may not be configurable.

Operational data

Frame, PV-code: FG, ASME
Max. design pressure (barg/psig): 10.3/150
Max. design temperature (°C/°F): 177/350

Frame, PV-code: FG, PED
Max. design pressure (barg/psig): 16.0/232
Max. design temperature (°C/°F): 180/356

Frame, PV-code: FS, ASME
Max. design pressure (barg/psig): 27.6/400
Max. design temperature (°C/°F): 160/320

Frame, PV-code: FS, PED
Max. design pressure (barg/psig):  30.0/435
Max. design temperature (°C/°F): 160/320

Extended pressure and temperature rating may be available on request.

Flange connections
FG, ASME: ASME B16.5 Class100 NPS 8
ASME B16.5 Class150 NPS 8
FG, PED: EN 1092-1 DN200 PN10
EN 1092-1 DN200 PN16
FS, ASME: ASME B16.5 Class 300 NPS 8
ASME B16.5 Class 400 NPS 8
FS, PED: EN 1092-1 DN200 PN25
EN 1092-1 DN200 PN40

Standard EN1092-1 corresponds to GOST 12815-80 and GB/T 9115.

Dimensional drawing
Measurements mm (inches)

ALFA LAVAL, IndustrialLine HEAT EXCHANGER, T20 W drawing

Type: T20-FG
H: 2145 (84.4”)
W: 780 (30.7”)
h:  285 (11.2”)

Type: T20-FS
H: 2183 (85.9”)
W: 780 (30.7”)
h: 323 (12.7”)