SONDEX® Sanitary plate heat exchangers

  • Overview
  • Related products
  • FAQ

SONDEX® Sanitary plate heat exchangers are designed for use in food, dairy, and beverage applications, as well as other applications with strict sanitary requirements.

What does that mean for you?

We have in-depth process knowledge of the food, dairy, and beverage industries and the extensive experience needed to engineer hygienic, high-performance solutions. Our regenerative pasteurizers recycle up to 95% of the energy, meaning huge savings on your power consumption.

The frames of our sanitary plate heat exchangers are designed with cleaning and maintenance in mind. Sturdy nylon rollers make the movable cover slide open effortlessly, and locking bushes with ball bearings allow it to be closed tightly again. Access has never been easier!

We take pride in ensuring gentle product handling for superior output quality, while adhering to the strict cleanliness requirements of each industry. Available with both Fishbone and Free Flow plates, we have the tools needed to provide you with the exact right heat exchanger for your application.

Ultimate leakage protection

Our Sonder Safe technology is a double-walled plate system designed to make any leakage, however unlikely, visible from outside the heat exchanger. This safety measure ensures that the malfunctioning unit can quickly be identified and repaired.

Because all leaks are external instead of internal, the flows are always separated. This makes double-walled sanitary plate heat exchangers the ideal solution when operating with media that must not be contaminated at any cost.

Multi-section design for advanced applications

Our sanitary plate heat exchangers are available as multi-section solutions, which can be regarded as multiple heat exchangers combined into a single installation, divided by intermediate frames.


  • Dairy/food/beverage industry
    - e.g. regenerative pasteurization applications
  • Industries with sanitary requirements

Technical specifications

  • Connections from DN25 to DN500
  • (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. Other materials available upon request
  • Gasket materials: EPDM-HT, NBR-HT, Viton. Other materials available upon request
  • Plate heights up to 3.5 m (11.5 ft)
  • Flow rates up to 1,600 m3/h (7,045 gpm)

Features and benefits

Heat exchanger solutions that adhere to the strict hygienic demands of the industries and complies with FDA material standards.

Plate technology made to provide the highest output product quality. We ensure gentle media treatment during processing with precise flow control, perfect temperature profiles, and the optimal residence time for all applications.

Cladded or stainless-steel frames designed to be easily accessible for quick and trouble-free inspection, cleaning – including cleaning in place (CIP), or maintenance.

Related products


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.