Sanitary applications:

The Sondex "Sonder Flex Series" has been specifically designed to provide improved efficiency compared to existing plate heat exchangers and to reduce the overall operating costs.
The Sondex "Sonder Flex Series" contains many innovative features developed and refined from existing sanitary plate designs. The Sondex "Sonder Flex Series" offers a wide range of plates with different thermal characteristics ensuring optimal plate selection for any given process and thereby the most cost effective solution.
Sondex is a global company specializing in the design, manufacture and sale of plate heat exchangers.

Plate Design, the inlet section:
Is designed to achieve a perfect distribution of the product over the entire heat transfer surface. This is done by enlarging the port inlet and provide the inlet with lead grooves which also guarantee no “dead spots” on the plate.
The multi-level inlet design secures rigid plate inlet with a minimum of contact points which form line contact.
The inlet parts are designed with leak detecting groove meeting 3A specifications.

The plate pattern:
Chevron angles give high thermal efficiency and are available in two versions giving high and low turbulence values. By combining these in a plate pack an optimal design can be offered. The chevron or fishbone pattern has proved to give the highest heat transmission for a given pressure drop.

Edge reinforcement:
In order to reinforce the gasket groove the Sondex “Sonder Flex Series” is designed with a protective groove making it rigid with an excellent hold on the gasket giving a long lifetime of the gasket and the plate.

The “Sonder Lock Gasket”:
In the fully protected gasket groove the “Sonder Lock Gasket” is fixed in place by strong rubber tabs which contrary to most glue less gaskets known today, really fix the gasket to the groove. High temperature Nitrile gaskets are standard equipment, meeting specifications stated by FDA. For even higher temperatures gaskets made of EPDM can be used. For extremely high temperatures, gaskets of flour carbon materials (Viton) can be delivered.

“Sonder Safe Plates”:
The Sondex “Sonder Safe Plates” Systems consists of two thin flow plates pressed together. The two plates form a pair of plates.
If there is a leak in one of the plates, the media will run out between the plates to atmosphere allowing the leaks to be seen from outside. This prevents a mixing of the products and warns about an internal leak.

Frames:
The Sondex “Sonder Flex Series” has a minimum of tightening bolts making an even pressure over the whole frame area.
This ensures a long lifetime for plates as well as for gaskets. There are various types of frames: Solid stainless steel, steel frames cladded with stainless steel or painted steel. The frames are built up in modules so the heat exchanger can be rebuilt if production has changed or if the frame is to be used for other purposes. Adjustable legs are standard for all stainless steel units.

Intermediate frames:
The frames can be delivered with intermediate frames dividing the plate heat exchanger into various sections where preheating, pasteurization and cooling can take place.