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SonFlow SFB25 brazed plate heat exchanger
KONTECH supplies SonFlow SFB25 brazed plate heat exchangers to HVAC contractors, engineering companies and industrial customers in Greece, Romania and Cyprus. The model is suitable for heating, cooling, heat pumps, refrigeration systems, industrial processes and replacement in existing installations.
Compact brazed plate heat exchanger for HVAC, cooling and industrial applications
SonFlow SFB25 is a brazed plate heat exchanger with a copper-brazed, gasket-free construction, intended for applications with defined operating parameters and suitable fluids. The model is built from AISI 316 stainless steel plates, brazed with copper in a vacuum process.
SFB25 is available in different thermal configurations, including TL, TM and TK, allowing selection according to the required temperatures, flow rates and heat transfer duty. Its compact construction makes it suitable for installations where space is limited.
SonFlow SFB25 is used in HVAC systems, heat pump installations, refrigeration circuits, solar heating systems, oil cooling, district heating and cooling, marine systems, data centres and industrial processes. When properly selected for the duty, the model supports efficient heat transfer within a compact volume.
SonFlow SFB25 is a practical model from the SFB series with maintained stock availability. It is suitable for HVAC, heat pumps, cooling and industrial systems, as well as replacement as a spare unit. View the available SFB25 configurations with online purchase option.
SFB25 is part of the SonFlow brazed plate heat exchangers range, intended for heating, cooling, heat pump and industrial applications.
Why engineers choose brazed plate heat exchangers
The copper-brazed gasket-free construction is suitable for systems with clean or mildly contaminated fluids where mechanical disassembly for cleaning is not expected. SonFlow SFB25 is used in installations where compact dimensions, easy installation and clearly defined operating parameters are important.
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Compact construction for limited installation space
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Copper-brazed gasket-free design
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AISI 316 stainless steel plates
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Design pressure up to 25 bar
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Operating temperature from -100°C to +185°C
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TL, TM and TK thermal configurations
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Suitable for heating, cooling and heat pump applications
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Easy and quick installation
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Low maintenance requirements under defined operating conditions
This makes SFB25 suitable for projects requiring a compact brazed plate heat exchanger with clearly specified operating parameters. For applications where a serviceable gasketed construction is required, see also gasketed plate heat exchangers.
Typical applications of the SonFlow SFB25 brazed plate heat exchanger
SonFlow SFB25 is used in applications with clean or mildly contaminated fluids where compact size, efficient heat transfer and replacement flexibility are important.
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District heating and district cooling
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HVAC systems
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Heat pump installations
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Refrigeration systems
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Solar heating systems
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Industrial processes
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Marine systems
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Data centres
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Oil cooling
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Replacement of an existing heat exchanger
SonFlow SFB25 is not suitable for fluids containing solid particles, fibres or non-homogeneous media. For industrial processes involving contaminated, viscous or particle-containing fluids, see also Free Flow plate heat exchangers.
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Key technical highlights of SonFlow SFB25
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Type: brazed plate heat exchanger
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Brazing: copper-brazed construction
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Plate material: AISI 316
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Brazing material: copper
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Design pressure: up to 25 bar
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Temperature range: -100°C to +185°C
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Construction standards: EN 13445, PED 2014/68/EU and ASME Section VIII, Div. 1
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Available connections: ¾” inside pipe thread ISO7-R, 1” pipe thread ISO7-R and NPT threads upon request
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Available accessories: insulation jacket, foundation feet and mounting brackets
SonFlow SFB25 is a compact copper-brazed plate heat exchanger for heating, cooling, heat pump and industrial applications. The construction consists of a pack of corrugated stainless steel plates positioned between stabilizing cover plates and copper-brazed through vacuum brazing. The plate geometry provides a large heat transfer surface within a compact volume and supports efficient heat transfer between the two fluids.
Request a quotation for SonFlow SFB25
To receive a quotation for a SonFlow SFB25 brazed plate heat exchanger, please provide the main operating parameters of your application.
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Flow rate on each side
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Inlet and outlet temperatures
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Fluid type
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Required heat duty
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Operating pressure
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Allowed pressure drop
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Connection requirements
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Information whether the unit is for a new installation or replacement
The provided parameters are used to identify a suitable configuration and prepare a commercial offer.
Technical data for SFB25
| Parameter |
Data |
|---|---|
| Type |
Brazed plate heat exchanger |
| Series |
SonFlow SFB25 |
| Model | SFB25 |
| Construction |
Copper-brazed, gasket-free |
| Plate material |
Stainless steel AISI 316 |
| Brazing material |
Copper |
| Design pressure |
up to 25 bar |
| Temperature range |
-100°C to +185°C |
| Standards |
EN 13445, PED 2014/68/EU ASME Section VIII, Div. 1 |
| Connections |
¾” inside pipe thread ISO7-R 1” pipe thread ISO7-R NPT threads upon request |
| Number of plates |
11, 15, 21, 31, 41, 51, 61, 71, 81, 91, 101 |
| Dimensional formula |
L1 = N x 2.3 + 8 mm (L1 = depth / pack length, N = number of plates) |
| Main dimensions |
A: 526 mm (A = height) B: 119 mm (B = width) C: 479 mm (C = vertical centre-to-centre distance) D: 72 mm (D = horizontal centre-to-centre distance) E: 28 mm (E = connection length) |
| Accessories |
Insulation jacket Foundation feet Mounting brackets |
The data shown represents the main technical characteristics of SonFlow SFB25.
For a specific quotation, the operating parameters, fluid type, temperature regime and connection requirements should be confirmed.
The technical data is based on product information from SonFlow A/S. The manufacturer reserves the right to change specifications without prior notice.
Other models from the SonFlow SFB series
Request for quotation
Specify the main technical parameters of your project to receive a quotation for a SonFlow SFB25 brazed plate heat exchanger. Fill in the required information in the form below and click “Send”.
About SonFlow and KONTECH
KONTECH Ltd. is the official distributor of SonFlow A/S.
SonFlow heat exchangers are designed in Denmark and intended for professional HVAC and industrial applications. The SonFlow SFB25 can be used for heating, cooling, heat pumps, refrigeration systems, industrial processes and replacement in existing installations according to the specified operating parameters.
SonFlow SFB25 is suitable for applications where compact construction, efficient heat transfer and clearly defined operating conditions are important.
Quality heat exchange solutions from SonFlow A/S
More than 45 years of experience in heat transfer technology. Certified products.
