Plate Assortment for SonFlow Plate Heat Exchangers

A comprehensive plate programme for maximum performance and energy efficiency

With over 45 years of experience in heat exchangers, SonFlow has developed a comprehensive range of plates with various press depths, patterns and thermal lengths. Each plate is carefully designed to ensure optimal performance, low energy consumption, efficient heat transfer and long lifetime.

Our product range offers a unique selection of plates tailored to meet the specific requirements of different applications. The number of plates in a plate heat exchanger depends on the size, desired thermal performance and flow rate. Whether you work in industry, energy, food, marine or HVAC, our engineers will help dimension your plate heat exchanger to meet your exact needs.

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Standard Plates

Our standard plates are designed with a herringbone pattern, and are used in our traditional and sanitary plate heat exchangers. They are available in two variants:

Thermal Short (TK): Steeper angles that reduce heat transfer and pressure loss.
Thermal Long (TL): Flatter angles that increase heat transfer and pressure loss.

These variants can also be combined into a thermal mix (TM) version to achieve a balance between efficiency and pressure loss.

Thermal short plate

Thermal long plate

Press Depths

In addition to our standard plates, we also offer plates with alternative press depths to suit specific operating conditions:

High Efficiency plates for heat exchangers

High Efficiency (HE): The HE series is designed with a lower pressing depth, ideal for applications requiring precise temperature control. These plates can maintain a temperature difference of as little as 0.5 degrees C between the two circuits, ensuring optimal heat transfer and high efficiency.

Deep (D): Plates with a deeper press depth provide improved heat transfer efficiency, as the deeper pattern creates stronger turbulence in the steam and condensate flow. They also reduce the risk of clogging when handling fluids with higher viscosity or particles.

The design prevents water pockets, ensures stable operation, and offers increased mechanical strength - allowing the plates to handle higher pressure differences between channels.
With wider channels and a robust construction, deep plates deliver lower pressure drop and reliable performance under high load and demanding conditions.

Deep corrugation plates are generally more suitable for steam compared with standard plates.

Free Flow Plates

Our Free Flow plates are designed with deep channels that allow unobstructed flow of media containing solids, fibres, particles or high viscosity. The plate pattern with horizontal waves minimises contact points in the flow direction and ensures gentle treatment of the media.

Selected Free Flow plate heat exchangers can be configured with two different plate depths: ‘SonFlow High’ and ‘SonFlow Low’. They can be assembled asymmetrically (12/6 mm gap) or symmetrically (9/9 mm gap), depending on the specific operational requirements.

Condenser Plates

Our condenser plates are specifically designed for condensation processes where vapour needs to be cooled and converted into liquid. The plate design ensures efficient transfer and a stable condensation process. The unique structure enables high heat transfer efficiency, even at low temperature differences.

Brazed Plates

Our brazed heat exchangers consist of thin, corrugated metal plates framed by two thicker stabilising plates. A thin copper foil is placed between each metal plate, the entire unit is permanently sealed through a specialized brazing process in our furnace.

The plates are designed with a horizontal wave pattern that creates a large yet compact surface area, allowing efficient heat transfer between gases or liquids.

Each unit is customised to your specific temperature and capacity requirements.

SonFlow Plate Programme Overview

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Plate Design

The plates in our heat exchangers are engineered to optimize heat transfer between different media. The specially designed pattern creates a compact surface area that enables effective heat exchange even at low pressure drops and small temperature differences.

plate reinforcement of heat exchanger pads

1 Plate reinforcement for support and guide beam:

Ensures proper support for easier installation and maintenance.
Prevents plate stack distortion and ensures stable operation, reducing the risk of failures and inefficient heat transfer.

2 Double internal seals:

Minimises the risk of fluid leakage and enhances operational safety and reliability.

3 Short inlet area design:

Distributes fluid evenly across the entire plate surface, ensuring uniform heat transfer.
An even distribution improves efficiency and reduces the risk of hotspots or areas with reduced heat transfer.

Thin Plates

Our plate design allows for a very high heat transfer relative to the pressure drop. The robust construction enables the use of thinner sheets without compromising on strength or durability. Thinner plates enhance heat transfer and reduce overall pressure drop in the heat exchanger, resulting in improved efficiency and lower operating costs.

Plate Materials

All plates are made from materials that are carefully selected to ensure compatibility with the specific process. The choice of material depends on factors such as pressure, temperature, capacity and fluid type.

SonFlow offers plates in several materials, including:

Stainless steel
Titanium
Nickel
C276 (Alloy)
SMO 254
Other materials are available on request.

Gaskets

The gaskets in our heat exchangers ensure effective sealing and prevent media mixing. They are moulded in one piece to fit precisely into the gasket grooves along the plate edge and around the corner holes.

Gaskets are available in several different materials, including NBR, EPDM and Viton.

The appropriate gasket material is selected based on the specific fluid and operating conditions of the heat exchanger.