Latest Plate Heat Exchangers Improve Sealing Effect and Prevents Gasket-Blow Out

Press Release Summary:

  • Improved thermal performance with optimized plate geometry, to support high turbulent flow and a lower charge
  • Feature gasket system and grove design to ensure high gasket stability and optimal plate alignment
  • Ideal for ammonia-based industrial refrigeration applications


Original Press Release:

New Danfoss Plate Heat Exchanger Seals the Deal on Reliability

Danfoss is proud to introduce a new series of semi-welded plate heat exchangers that have been specifically designed, crafted, and tested to fit ammonia-based industrial refrigeration applications. The SW19-59 range of semi-welded plate heat exchangers adds one more option to the broad portfolio of Danfoss industrial refrigeration solutions.

When it comes to industrial refrigeration applications, operational safety is essential. The new line of semi-welded plate heat exchangers from Danfoss can help industrial refrigeration professionals achieve a safer, more energy-efficient operation, with several key improvements made to the design:

New plate design delivers excellent heat transfer capabilities

The SW19-59 range features improved thermal performance due to a more compact design with optimized plate geometry, to support high turbulent flow and a lower charge.

New gasket system improves plate pack stability

Operational safety is essential in ammonia applications, so a new gasket system and grove design has been engineered to ensure high gasket stability and optimal plate alignment, enabling easy and fast service and maintenance.

This new design improves the sealing effect and prevents gasket-blow out. Furthermore, the risk of contamination is reduced due to the double gasket barrier that will drain potential leakages outside of the plate pack. The new gasket system is glue free for easy maintenance.

Easy maintenance and service

The SW19-59 range is easy to service and maintain. Technicians have quick access to the plate pack with the non-corrosive nylon roller that makes it easy to slide the follower along the carrying bar.

Assembly of the plate heat exchanger is fast and safe thanks to fixed bolt heads and lock bushes that offer prevention against nut and bolt head rotation when opening and closing the unit. The enhanced gasket system ensures easy and precise plate pack alignment.

High quality product - fully tested

The Danfoss semi-welded plate heat exchanger design has been verified through thermal and mechanical tests. Furthermore, each semi-welded plate cassette and fully assembled plate heat exchanger are thoroughly leak tested with helium before they leave the Danfoss factory.


The new semi-welded plate heat exchanger comes in the following sizes:

Size                         SW19B                         SW26A                         SW40A                         SW54                         Sw59
Port                            2.5"                              4.00"                             4.00"                             6.00"                         8.00"
Height                        37.80"                          44.40"                           60.40"                          75.60"                       68.00"
Width                         15.80"                          20.00"                           20.00"                          24.30"                       30.80"

Learn more about the new SW19-59 range of plate heat exchangers at

Media contact:
Lisa Tryson, Director, Corporate Communications & PR – Email:, Phone: +1 410 513 1142

Related links:

Danfoss engineers advanced technologies that enable us to build a better, smarter and more efficient tomorrow. In the world’s growing cities, we ensure the supply of fresh food and optimal comfort in our homes and offices, while meeting the need for energy-efficient infrastructure, connected systems and integrated renewable energy. Our solutions are used in areas such as refrigeration, air conditioning, heating, motor control and mobile machinery. Our innovative engineering dates back to 1933 and today Danfoss holds market-leading positions, employing 27,000 and serving customers in more than 100 countries. We are privately held by the founding family. Read more about us at

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