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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. The relatively short plate makes this model suitable for duties with short temperature programs and when a low pressure drop is appreciated. A large range of plate and gasket types is available.
ApplicationsALFA LAVAL, IndustrialLine HEAT EXCHANGER, TK20 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
  • 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

Technical data

Plates
Name: TK20-BW
Type: Semi-welded
Free channel, mm (inches): 2.5 (0.098)

Materials
Heat transfer plates: 304/304L, 316/316L, 254
Ti

Field gaskets: NBR, EPDM, FKM
NBR, EPDM, CR
 
Ring gaskets:  NBR, EPDM, FEPM, CR
Flange connections:  Metal lined: stainless steel, Alloy 254, 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, PED
Max. design pressure (barg/psig): 16.0/232
Max. design temperature (°C/°F): 50/122

Frame, PV-code: FD, pvcALS
Max. design pressure (barg/psig): 25.0/363
Max. design temperature (°C/°F): 150/302

Frame, PV-code: FD, ASME
Max. design pressure (barg/psig): 20.7/300
Max. design temperature (°C/°F): 150/302

Frame, PV-code: FD, PED
Max. design pressure (barg/psig): 25.0/363
Max. design temperature (°C/°F): 150/302

Frame, PV-code: FX, ASME
Max. design pressure (barg/psig): 62.1/900
Max. design temperature (°C/°F): 150/302

Frame, PV-code: FX, PED
Max. design pressure (barg/psig): 63.0/914
Max. design temperature (°C/°F): 150/302

Extended pressure and temperature rating may be available on request.

Flange connections
FG, pvcALS: EN 1092-1 DN150/DN200 PN16
ASME B16.5 Class 150 NPS 6/NPS8
JIS B2220 16K 200A
FG, PED: EN 1092-1 DN150/DN200 PN16
ASME B16.5 Class 150 NPS 6/NPS 8
FD, pvcALS: EN 1092-1 DN150/DN200 PN25
ASME B16.5 Class 300 NPS 6/NPS 8
JIS B2220 20K 200A
FD, ASME: ASME B16.5 Class 300 NPS 6/NPS 8
FD, PED: EN 1092-1 DN150/DN200 PN25
ASME B16.5 Class 300 NPS 6/NPS 8
FX, ASME: ASME B16.5 Class 150 NPS 8
ASME B16.5 Class 900 NPS 6
FX, PED: EN 1092-1 DN200 PN16
EN 1092-1 DN200 PN25
EN 1092-1 DN150 PN63
ASME B16.5 Class 150 NPS 8
ASME B16.5 Class 900 NPS 6

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

Dimensional drawing
Measurements mm (inches)

ALFA LAVAL, IndustrialLine HEAT EXCHANGER, TK20 W.JPG drawing

Type: TK20-FG
H: 1525 (60.0”)
W: 740 (29.1”)
h:  301 (11.9″)

Type: TK20-FD
H: 1525 (60.0”)
W: 785 (30.9”)
h:  301 (11.9″)
Type: TK20-FX
H: 1560 (61.4”)
W: 900 (35.4”)
h:  331 (13.0″)

The number of tightening bolts may vary depending on pressure rating.