Standard plate heat exchangers

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  • Related products
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Our SONDEX® standard plate heat exchangers are the ideal choice for a wide range of applications across numerous market segments. Innovative technologies and smart design make our standard plate heat exchangers a stellar investment and the go-to choice for standard duties.

We have one of the largest plate portfolios in the world and we customize each heat exchanger to meet your exact requirements. The versatile design and high thermal efficiency make them the perfect solution for a wide range of applications.

Features and benefits

Experience the benefit of an individually customized solution that perfectly matches your requirements and lowers your energy consumption.

High performance for a low pressure drop eliminates unnecessary burdens on your system and optimizes overall system performance.

We design single-pass solutions when possible, as they are the preferred choice for almost all duties. With all connections on the head you do not need to disconnect the heat exchanger from the piping to perform inspection, cleaning, or service.

The design results in a compact solution with a small footprint, simple installation, and easy access for maintenance.

Discover how the SONDEX® gasketed plate heat exchanger operates.

From design and construction to working principles, we take you through the key features behind these high-efficiency heat transfer solutions.


  • HVAC industry - e.g. district cooling solutions using seawater and groundwater as cooling source - e.g. district heating solutions using, for example, solar and geothermal energy as heating source
  • Marine/offshore industry - e.g. central and lubrication oil cooling
  • Dairy/food/beverage industry - e.g. pasteurization, heat recoveries, and duties that require gentle treatment
  • Sugar industry
  • Biogas industry
  • Pulp and paper industry
  • Heavy industry
  • Mining industry
  • Petrochemical industry
  • Chemical industry - e.g. waste heat recovery from condenser water

Technical specifications

  • Conections from DN25 to DN600 (1" to 24")
  • Frames designed according to FEA and PED 2014/68/EU (EN13445) and ASME sec VIII, Div. 1 construction standards
  • Plate materials: AISI 304/316, titanium, SMO, Hastelloy*
  • Gasket materials: EPDM-HT, NBR-HT, Viton*
  • Plate lengths up to 5.5 m (18 ft)
  • Flow rates up to 7,200 m3/h (31,700 gpm)
  • Working pressure up to 35 bar (500 psi)
  • Working temperatures from -20 °C to 180 °C (-4 °F to 356 °F)

*Other materials are available upon request.

D-plate technology

D-plate technology

Our Danfoss engineers have enhanced the way heat exchanger plates are designed with the introduction of the new D-plate series. Drawing on years of experience within heat transfer technology and deep application knowledge, we have made significant upgrades to the traditional Fishbone plates to truly redefine the way we think of heat exchanger plates.

SONDEX® Fishbone plates

SONDEX® Fishbone plates

SONDEX® Fishbone plate pattern technology is used for the vast majority of our plate heat exchangers. The pattern is designed for high thermal performance while using the allowed pressure drop in the most efficient manner. Available with different pressing depths, pattern pitch and angles – each plate has a pattern that is optimized for a certain duty.


Type Name Language Valid for Updated Download File type
Brochure A world of heat exchangers English Multiple 13 Feb, 2024 7.1 MB .pdf
Brochure D-plate technology - Experience D-power English Multiple 30 Jan, 2023 6.0 MB .pdf
Brochure Danfoss Design Code (DDC) English Multiple 06 Sep, 2021 497.0 KB .pdf
Brochure Danfoss Design Code (DDC) French France 29 Nov, 2021 302.6 KB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers German Multiple 17 Jan, 2024 9.2 MB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers French Multiple 22 Dec, 2023 9.2 MB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers Polish Multiple 13 Sep, 2023 9.2 MB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers Hungarian Multiple 13 Sep, 2023 9.1 MB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers English Multiple 13 Sep, 2023 9.6 MB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers Danish Multiple 15 Sep, 2023 9.1 MB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers Chinese (CN) Multiple 17 Jan, 2024 9.6 MB .pdf
Brochure Gasketed plate heat exchangers - Next-generation heat transfer solutions English Multiple 12 Feb, 2024 5.7 MB .pdf
Data sheet Gasketed Plate Heat Exchangers DN 100 Lithuanian Multiple 27 Jan, 2021 3.0 MB .pdf
Brochure Heat exchangers for the power industry English Multiple 12 Feb, 2024 5.4 MB .pdf
Data sheet S1-S4A-S6A-S8A_DN 32/1.25”_GPHE English Multiple 23 Sep, 2019 2.2 MB .pdf
Data sheet S140-S201-S300_DN 500/20"_GPHE English Multiple 18 Nov, 2019 2.0 MB .pdf
Data sheet S21-S22-S36-S37-S45SE-S47-S55SE-S64_DN 100/4" English Multiple 19 Jun, 2019 3.0 MB .pdf
Data sheet S41-S42-S62-S63-S79-S86-S87-S110_DN 150/6"_GPHE English Multiple 03 Jul, 2019 3.2 MB .pdf
Data sheet S43-S65-S100-S130-S131-S152-S221-S229_DN 200/8"_GPHE English Multiple 03 Jul, 2019 3.4 MB .pdf
Data sheet S67-S113-S155_DN 250/10"_GPHE English Multiple 23 Jul, 2019 2.4 MB .pdf
Data sheet S7A-S14A-S20A_DN 50/2"_GPHE English Multiple 19 Jun, 2019 2.3 MB .pdf
Data sheet S81-S121-S188-S251_DN 300/12"_GPHE English Multiple 23 Jul, 2019 2.4 MB .pdf
Data sheet S9A-S19A-S31A-S44A_DN 65/2.5"_GPHE English Multiple 03 Jul, 2019 2.5 MB .pdf
Brochure SONDEX® Free Flow sugar brochure English Multiple 12 Feb, 2024 7.8 MB .pdf
Brochure SONDEX® Traditional Plate Heat Exchangers English Multiple 12 Feb, 2024 9.4 MB .pdf

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The choice of heat exchanger depends on many factors. Our skilled sales engineers design the heat exchanger with the appropriate dimensions and correct specifications based on your input and requirements, to ensure that you receive a quality solution that performs optimally.

Our heat exchangers are approved and certified according to industry standards and requirements. For specific details, please reach out to your local SONDEX® brand sales representative.

Please contact your local SONDEX® brand sales responsible.

Please contact your local SONDEX® brand sales office. For the most accurate quotation, please prepare the following data:

  • Duty,
  • Type of media,
  • Pressure drop,
  • Flow rate,
  • Working pressure,
  • Thermodynamic properties, Temperature,
  • Working temperature.

Case stories

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Gasketed plate heat exchanger service

Our service team offers repairs, trouble shooting, upgrades, and on-site cleaning and maintenance of your plate heat exchanger solution. We always utilize genuine spare parts both for SONDEX® heat exchangers and our selection of other heat exchanger brands.