Free Flow plate heat exchangers

  • Overview
  • Documents
  • Related products
  • FAQ
  • Case stories

Our SONDEX® Free Flow plate heat exchangers are excellent choices for applications that use media with particle-rich contents, fouling tendency, or high viscosity. We customize each Free Flow heat exchanger to suit your application and media type. The contact-free plate channels ensure an unimpeded flow and long intervals between cleaning.

We set the new standard for improved performance and reliability when your media require gentle treatment and are unsuitable for regular heat exchangers due to viscosity, fouling tendency, or particle contents.

Features and benefits

Gentle treatment and even distribution of the media provide the highest possible product output quality.

High heat transfer efficiency and extended intervals between cleaning ensure operation for an entire campaign with minimum downtime and maximum value for money.

Large plate gap designed to counteract fouling with sizeable plate channels and no stagnant zones.

High thermal efficiency

SONDEX® Free Flow

SONDEX® Free Flow plates feature deep and wide channels that provide enough room for media that contain fibers and particles, or high-viscosity media. The channels allow for efficient heat transfer and an ideal flow.

Applications

  • Dairy/food/beverage industry
    - e.g. food production, like juice and alcohol processing
  • Sugar industry
    - e.g. sugar production, such as concentration of sugar content in sugarcane juice
  • Biogas industry
  • Wastewater industry
  • Pulp and paper industry
  • Mining industry

Technical specifications

  • Connections from DN25 to DN500 (1” to 20”)
  • 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 heights up to 3.5 m (11.5 ft)
  • Flow rates up to 1,600 m3/h (7,045 gpm)
  • Plate gap from 5 to 12 mm (0.2” to 0.5”)
  • Working pressure up to 10 bar (145 psi)
  • Working temperatures from -20 °C to 180 °C (-4 °F to 356 °F)

*other materials available upon request

SONDEX® Free flow patterns

The SONDEX® Free Flow pattern is designed to treat media that is unsuitable for regular heat exchangers due to high viscosity, fiber and particle contents, or considerable risk of fouling.

Documents

Documents
Type Name Language Valid for Updated Download File type
Brochure A world of heat exchangers Latvian Latvia 28 May, 2020 7.1 MB .pdf
Brochure A world of heat exchangers English United States 08 Jul, 2021 19.0 MB .pdf
Brochure A world of heat exchangers Italian Italy 03 May, 2022 4.8 MB .pdf
Brochure A world of heat exchangers Romanian, Moldavian, Moldovan Romania 16 Nov, 2022 4.1 MB .pdf
Brochure A world of heat exchangers English Multiple 25 Jan, 2023 6.9 MB .pdf
Brochure Anatomia e Conhecimento dos Trocadores de Calor a Placas SONDEX® Portuguese Multiple 26 Jun, 2019 7.2 MB .pdf
Brochure Eine Welt der Plattenwärmetauscher German Multiple 06 Jul, 2021 14.8 MB .pdf
Data sheet Free Flow Plate Heat Exchangers (DN 25 / 1” - DN 400 / 16”) English Multiple 25 Oct, 2022 3.1 MB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers English Multiple 20 Sep, 2022 9.7 MB .pdf
Operating guide Gasketed Heat Exchangers English Multiple 26 Nov, 2020 5.6 MB .pdf
Brochure Gasketed plate heat exchangers - Next-generation heat transfer solutions English Multiple 17 May, 2022 5.9 MB .pdf
Brochure SONDEX Płytowe wymienniki ciepła Polish Poland 15 Nov, 2019 7.4 MB .pdf
Brochure SONDEX® Free Flow sugar brochure English Multiple 22 Jun, 2020 7.7 MB .pdf
Brochure SONDEX® Scambiatori di calore a piastre tradizionali Italian Multiple 26 Jun, 2019 6.5 MB .pdf
Brochure SONDEX® Traditional Plate Heat Exchangers English Multiple 16 Aug, 2021 9.5 MB .pdf
Brochure SONDEX® Traditionelle Plattenwärmetauscher German Multiple 26 Jun, 2019 9.5 MB .pdf
Brochure SONDEX® 可拆式板式换热器 (Sondex® Traditional plate heat exchangers) Chinese (CN) Multiple 26 Jun, 2019 6.8 MB .pdf
Brochure Wymienniki ciepła Sondex Polish Poland 19 Jul, 2019 1.5 MB .pdf
Brochure Брошура_Вдосконалені рішення теплообміну Ukrainian Ukraine 01 Sep, 2022 3.2 MB .pdf

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  • if (isSmallPicture) { SONDEX® Free Flow plate heat exchangers- Danfoss; } else if (isBigColumns) { SONDEX® Free Flow plate heat exchangers- Danfoss } else { SONDEX® Free Flow plate heat exchangers- Danfoss }
    Free Flow plate heat exchangers

    SONDEX® Free Flow plate heat exchangers are the preferred choice for applications that use media with particle-rich contents, fouling tendency, or high viscosity. Each Free Flow heat exchanger is customized to suit your application and media type, with contact-free plate channels for an unimpeded flow and long intervals between cleaning.

FAQ

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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