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SIGMA Gasketed Plate Heat Exchanger

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High Performance Gasketed Plate Heat Exchangers

Plate heat exchangers use corrugated plates stacked between a fixed and movable pressure plate. As virtually all of the material is used for heat transfer, plate heat exchangers can have large amounts of effective heat transfer surface in a small footprint. It is not uncommon that a plate heat exchanger will have the same thermal capacity as a shell and tube five times larger. Our plate heat exchangers incorporate superior design features to ensure long-term performance and customer satisfaction.

With a compact design and outputs ranging from 125 kW, 130 kW, 135 kW, 150 kW to 210 kW, they are suitable for boilers, process heat, or HVAC systems.

Application areas for our plate heat exchangers

  • Heat exchangers for district heating and cooling: Highly efficient in energy transfer and ideal for local and district heating networks (e.g., as district heating).
  • Food industry & beverage production: Our stainless steel plate heat exchangers meet the highest hygiene standards.
  • Chemical industry & pharmaceuticals: Reliable performance with aggressive media thanks to a wide range of plate and gasket materials.
  • HVAC & building services engineering: Compact footprint and quick adaptation for retrofit and new installation projects.
  • Process industry & plant engineering: Custom-engineered solutions for heat recovery, condensation, evaporation and many other duties.

Technical advantages of our plate heat exchangers

The unique wave pattern pressed into each plate generates maximum overall heat transfer rates through turbulent flow and optimal fluid distribution across the entire surface of the plate heat exchanger.

A true counterflow principle and high heat transfer coefficients enable our plate heat exchangers to operate economically even with extreme temperature differences.

High-quality, precisely fitting gaskets and an adhesive-free gasket fastening system ensure reliable sealing and easy maintenance.

The compact design with low fill volumes ensures rapid responses to temperature fluctuations while reducing the consumption of expensive process fluids.

The number of plates used can be flexibly adjusted – a key advantage for optimal design and selection of the right model.

  • The unique corrugation pattern pressed into each plate produces the highest overall heat transfer rate by assuring turbulent flow and excellent fluid distribution across the entire surface.
  • A true counter-current flow principle and a high heat transfer rate allow our plate heat exchangers to economically handle extreme temperature requirements.
  • High-quality, custom-fit gaskets ensure a secure seal and simple maintenance. The non-adhesive clip-on gasket system is robust and ensures proper fit of the gaskets when closing the heat exchanger.
  • The double seal between the process fluids prevents the possibility of the products mixing if a seal fails. This also allows any leakage to be detected through its escape into the atmosphere.
  • The plate flow gaps have low fill volumes to ensure a faster response to heating and cooling requirements while reducing the costs for more expensive process fluids.
  • The design principle allows for easy expansion or adaptation of the plate pack to new process parameters.
  • Many plate sizes and types are available for numerous applications in industry, HVAC, energy, and food industries — ideal for industrial heat exchanger requirements.
  • Compressors
  • Fluid technology
  • Beverages and food
  • Beverage industry
  • Brewing
  • Dairy products
  • Edible oils
  • Food ingredients
  • Sugar and starch
  • Industrial markets
  • Air dryers
  • Automotive industry
  • Shipbuilding
  • District heating and cooling
  • HVAC
  • Oil and gas industry
  • Power generation
  • Power plant equipment
  • Process industries
  • Chemical industry
  • Metal processing
  • Petrochemical industry
  • Pharmaceuticals, nutraceuticals and cosmetics
  • Refrigeration technology
  • Surface coating
  • Wastewater treatment
  • Power generators
Temperature -29°C – 200°C
Pressure Vacuum up to 25 bar
Volume flows In excess of 4,500 m³/h
Connections Up to DN500
Plates
Standard AISI 304 stainless steel (1.4301), AISI 316L stainless steel (1.4404)
Special features AISI 904 (1.4539), SMO 254 (1.4547), nickel alloys, pure nickel, Ti and Ti-Pd alloy
Thickness 0.4 mm to 1.15 mm
Gaskets
Standard Nitrile, EPDM, FPM
Special features HNBR, PTFE coated elastomers (SIGMACOAT), FDA compliant elastomers, hard seals
Attachment method SIGMAFIX non-adhesive or glued
Frame
Material Enameled carbon steel or stainless steel (solid and overlaid)
Connections
Standard Studs, flanges, aseptic and threaded connections in stainless steel
Special features 904L (1.4539), Ti, SMO 254 (1.4547), nickel alloys
Norms and standards
Approvals PED, ASME, ABS, LRS, GL, BV

Other types of gasketed plate heat exchangers

SIGMA universal plates from the SIGMAFIT series

The SIGMAFIT series features retention time behavior that has been optimized using computer simulation. This allows the series to be used without hesitation in applications that require a homogeneous retention time profile.

  • This design series is used, for example, for all liquids – even those with small solid particles – in the areas of industrial and food technology.
  • Flow rates of up to 4,500 m³/h
  • Hard and soft embossed structures in a herringbone pattern.
  • Plate gap heights of between 2.5 and 4 mm
  • The plates can be equipped with non-adhesive SIGMAFIX gaskets or with bonded high-performance seals.
  • A wide selection of plate and gasket materials is available.
  • Operating pressures of up to 25 bar
  • Also available with SIGMACOAT PTFE coated elastomer gaskets
SIGMA high-performance plates from the X series

The advantages of the X series come into play especially where there are very small differences in temperature between cold and warm media. The thinner plate thicknesses of the X series plates also reduce thermal resistance and increase efficiency.

  • Can be used with pure, homogeneous, solid- and sediment-free liquids in all industries.
  • Flow rates of up to 750 m³/h
  • Thin-film plate with highest heat transfer coefficients.
  • Hard and soft embossed structures in a herringbone pattern, partially patented.
  • Plate gap heights < 2.5 mm.
  • The plates can be equipped with non-adhesive SIGMAFIX gaskets or with bonded high-performance seals.
  • Wide selection of materials for plates and gaskets.
SIGMA thick-film plates from the T series

The large gap heights of the T series allow solid particles to flow through the flow gaps. But these plate variants can also be used in applications that only allow relatively small drops in pressure.

  • Can be used for all liquids, even those with coarse solid particles, as well as for the condensation of vapors or for the cooling/heating of gases in all areas of industry.
  • Thick-film boards with hard and soft embossed structures in a herringbone pattern.
  • Plate gap heights of between 4 and 6 mm.
  • Large selection of plate and gasket materials.
  • Flow rates of up to 750 m³/h