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Alfa Laval T20 Gasketed Plate Heat Exchanger

Description

A gasketed plate heat exchanger for process and utility duties up to DN200

The Alfa Laval T20 is a gasketed plate-and-frame heat exchanger from the Alfa Laval Industrial line, offered with a large selection of plate and gasket types so one frame concept can serve many duties. Alfa Laval lists applications from energy and utilities, chemicals, marine, steel, pulp and paper, mining, HVAC and refrigeration to water and wastewater treatment. The plate pack can be opened for inspection and cleaning, and heat transfer area can be changed later by adding or removing plates.

Technical specifications

Parameter Specification
Type Gasketed plate and frame heat exchanger, Industrial line
Plate types T20-B (free channel 1.9 mm), T20-P (2.9 mm), T20-M (4.0 mm)
Heat transfer plate materials 304/304L, 316/316L, 254, Alloy 33, C-276, C-2000, Ni, Ti
Field gasket materials NBR, EPDM, FKM, HeatSeal
Connections Carbon steel; metal lined (stainless steel, Alloy C-276, titanium) or rubber lined
Port size DN200 / NPS 8 (EN 1092-1, ASME B16.5, JIS B2220 depending on frame)
Frame and pressure plate Carbon steel, epoxy painted
FM frame, pvcALS / PED 10.0 barg (145 psig) at 180 C (pvcALS) or 120 C (PED)
FG frame, pvcALS / ASME / PED 16.0 barg at 180 C (pvcALS, PED); 10.3 barg at 249 C (ASME)
FD frame, ASME 20.7 barg (300 psig) at 249 C (480 F)
FS frame, pvcALS / ASME / PED 29.5 barg at 200 C; 27.6 barg at 249 C; 30.0 barg at 160 C
Frame size (H x W), T20-FM 2141 x 780 mm (pvcALS); 2146 x 755 mm (PED)
Frame size (H x W), T20-FG / T20-FS 2146 x 780 mm / 2183 x 780 mm
Features listed Five-point alignment, reinforced hanger, chocolate-pattern distribution area, glued or clip-on gasket, offset gasket groove, leak chamber, bearing boxes

Extended pressure and temperature ratings may be available on request, and not every combination in the leaflet is available in every region, so the exact frame, code and gasket must be confirmed at quotation.

Choosing plate type, frame and gaskets

The three plate types differ in free channel: the B plate (1.9 mm) suits clean, low-viscosity duties, the P plate (2.9 mm) is a mid-range choice and the M plate (4.0 mm) tolerates fibres and larger particles. Gasket material is chosen from the media and temperature; EPDM and NBR cover most water and oil duties while FKM and HeatSeal are for higher temperature or aggressive media. Titanium or 254 plates are the usual route for seawater and chloride-bearing cooling water. The frame code (FM, FG, FD, FS) fixes the design pressure, and the rating differs between pvcALS, ASME and PED approvals, so state the design code of your project.

Related models and family

Alfa Laval publishes sibling leaflets for the TS20 gasketed unit and for the semi-welded T20-W and TK20-W variants. Smaller gasketed frames from the same maker, for example the Alfa Laval M6, cover lower capacities, and further units are listed under cooling equipment.

Documents and quotation

The attached Alfa Laval T20 product leaflet (CHE00078-4-EN-GB) carries the technical data above. Send the duty (fluids, flows, inlet and outlet temperatures, allowable pressure drop, design code and materials) and the quantity for a quotation; thermal sizing is based on those inputs, not on the leaflet alone.

Datasheets & Documents
  • PDF Datasheet Alfa Laval T20 gasketed plate heat exchanger product leaflet (CHE00078-4-EN-GB) Download
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About brand

Heat transfer, separation and fluid handling are the three fields Alfa Laval has worked in since 1883. The company from Lund, Sweden, is the reference name for plate heat exchangers and for hygienic pumps and valves in food plants. Seven Star LLC lists the Alfa Laval LKH hygienic centrifugal pump and the M6 gasketed plate heat exchanger, and supplies Alfa Laval equipment and parts to plants in Oman and the GCC.

Alfa Laval products on this page

The LKH is the premium hygienic centrifugal pump in the Alfa Laval range, with a semi-open impeller for gentle product handling. It is built in 13 sizes for flows up to 500 m³/h and is used in dairy, food, beverage and personal care lines. Related versions include LKH Prime (self-priming) and LKH UltraPure. The M6 is a gasketed plate heat exchanger whose plate pack can be opened for cleaning or extended with more plates.

Ordering Alfa Laval pumps and heat exchanger parts: what we need

For a pump, send the type, impeller diameter, seal type and elastomer, motor data and the serial number. For a plate heat exchanger, the serial number on the frame plate is the key, as it identifies plate material, gasket material and the number of plates. For a new unit, give both fluids, flows, inlet and outlet temperatures and the allowed pressure drop.

Frequently Asked Questions

What is the port size of the Alfa Laval T20?
The leaflet lists DN200 / NPS 8 connections, with EN 1092-1, ASME B16.5 and JIS B2220 standards depending on the frame.
Which plate materials are available for the T20?
304/304L, 316/316L, 254, Alloy 33, C-276, C-2000, nickel and titanium.
What is the free channel of the T20-M plate?
4.0 mm; T20-B is 1.9 mm and T20-P is 2.9 mm.
Which gasket materials are offered?
NBR, EPDM, FKM and HeatSeal.
What is the highest design pressure in the leaflet?
30.0 barg (435 psig) for the FS frame with PED approval, with 29.5 barg for FS pvcALS; ratings depend on frame and code.