High thermal performance
Our SONDEX® Fishbone plate pattern technology is used in the 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. Fishbone plate patterns are available with different pressing depths, pattern pitch and angles with each individual pattern optimized for a certain duty.
What does that mean for you?
Engineered to maximize turbulence, even at low flow rates, this pattern achieves unparalleled heat transfer. The pattern has proved its effectiveness through rigorous testing and is the default choice for plate heat exchangers.
Variants of the Fishbone pattern are designed to create different levels of turbulence, use a different pressure drop, and meet different thermal requirements. Each variant fills a particular niche, or is aimed at a certain type of duty. This flexibility allows us to optimally cover all your heat transfer needs, no matter the application.
Special features include a reinforced hanging system for better suspension, an optimized distribution area that prevents stagnant zones, a maximized heat transmission area for high performance, and the unique SONDEX® Alignment System that ensures proper plate pack stability and keeps the individual plates firmly in place in the assembled heat exchanger.
Features and benefits
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Maximized heat transmission area, fine-tuned for each application, reduces the total number of plates needed for optimal performance. High efficiency lets you dial up performance and dial down your energy consumption.
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Designed to ensure an even distribution of media across the entire plate and prevent stagnant zones, resulting in the best possible use of the pressure drop.
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Unique gasket system that prevents misalignment of the plate pack and allows for easy assembly. The specially designed gasket groove preserves gasket elasticity and increases its lifetime.
From design and construction to working principles, we take you through the key features behind these high-efficiency heat transfer solutions.
Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Brochure | A world of heat exchangers | English | Multiple | 15 Sep, 2025 | 4.7 MB | |
| Brochure | A world of heat exchangers | Bulgarian | Bulgaria | 04 Oct, 2024 | 5.3 MB | |
| Brochure | A world of heat exchangers | Romanian, Moldavian, Moldovan | Romania | 10 Oct, 2024 | 9.7 MB | |
| Operating guide | DA - Gasketed and semi-welded Plate type heat exchangers | Danish | Multiple | 05 Jun, 2025 | 9.1 MB | |
| Operating guide | DE - Gasketed and semi-welded Plate type heat exchangers | German | Multiple | 05 Jun, 2025 | 9.2 MB | |
| Operating guide | EN - Gasketed and semi-welded Plate type heat exchangers | English | Multiple | 02 Jun, 2025 | 9.6 MB | |
| Operating guide | FR - Gasketed and semi-welded Plate type heat exchangers | French | Multiple | 05 Jun, 2025 | 9.1 MB | |
| Brochure | Gasketed plate heat exchangers - Next-generation heat transfer solutions | English | Multiple | 15 Sep, 2025 | 5.6 MB | |
| Operating guide | HU - Gasketed and semi-welded Plate type heat exchangers | Hungarian | Multiple | 05 Jun, 2025 | 9.1 MB | |
| Operating guide | IT - Gasketed and semi-welded Plate type heat exchangers | Italian | Multiple | 05 Jun, 2025 | 9.1 MB | |
| Operating guide | PL - Gasketed and semi-welded Plate type heat exchangers | Polish | Multiple | 05 Jun, 2025 | 9.2 MB | |
| Operating guide | RU - Gasketed and semi-welded Plate type heat exchangers | Russian | Multiple | 17 May, 2024 | 16.5 MB | |
| Brochure | SONDEX® Free Flow sugar brochure | English | Multiple | 27 Nov, 2024 | 7.2 MB | |
| Brochure | SONDEX® Traditional Plate Heat Exchangers | English | Multiple | 12 Feb, 2024 | 9.4 MB | |
| Operating guide | SV - Gasketed and semi-welded Plate type heat exchangers | Swedish | Multiple | 17 Nov, 2025 | 9.6 MB | |
| Operating guide | ZH - Gasketed and semi-welded Plate type heat exchangers | Chinese | Multiple | 05 Jun, 2025 | 9.6 MB | |
| Brochure | Брошура_Вдосконалені рішення теплообміну | Ukrainian | Ukraine | 01 Oct, 2025 | 3.8 MB |
Related products
SONDEX® standard plate heat exchangers are the ideal choice for a wide range of applications across numerous market segments. We have the largest plate portfolio in the world, and customize each heat exchanger to meet your exact requirements. Innovative technologies and smart design make our traditional plate heat exchangers a stellar investment.
Discover superior processing with Danfoss’s hygienic gasketed plate heat exchangers, meticulously engineered to meet the most stringent hygienic requirements. Our solutions utilize FDA-compliant materials to ensure the utmost quality in your end product.
FAQ
What kind of heat exchanger is right for me?
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.
Which certificates are available for the heat exchangers?
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.
Where can I get a price list?
Please contact your local SONDEX® brand sales responsible.
How can I get a quotation?
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.