Free Flow plate heat exchangers

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

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 English Multiple 13 Feb, 2024 7.1 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 French Multiple 22 Dec, 2023 9.2 MB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers Chinese (CN) Multiple 17 Jan, 2024 9.6 MB .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 Polish Multiple 13 Sep, 2023 9.2 MB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers Russian Multiple 17 May, 2024 16.5 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 Hungarian Multiple 13 Sep, 2023 9.1 MB .pdf
Operating guide Gasketed and semi-welded Plate type heat exchangers Danish Multiple 15 Sep, 2023 9.1 MB .pdf
Brochure Gasketed plate heat exchangers - Next-generation heat transfer solutions English Multiple 12 Feb, 2024 5.7 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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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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Service

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.