Brazed Plate Heat Exchangers

Permanently Sealed
Brazed Heat Exchangers

SonFlow’s efficient brazed heat exchangers (SFB) are permanently sealed heat exchangers suitable for a wide variety of applications across numerous market segments.

For the brazed heat exchanger series, the key focus lies in reliability and high performance. Our talented team with more than 45 years of experience in heat exchangers has developed and thoroughly tested the efficient brazed heat exchangers, handling advanced heat transfer technology.

Features

Every detail is carefully designed to ensure optimal performance, reduce maintenance costs, and decrease downtime.
One of our focus areas is sustainability and therefore it is important that the units are energy-efficient and environmentally friendly.

Advantages of SonFlow Brazed Heat Exchangers

High Configuration Flexibility
Compact Size
Copper Brazed Construction
Gasket free
Close Approach Temperature
Possible to achieve close approach temperatures
Easy and Quick Installation
Less Fouling
A smooth plate surface minimizes fouling
Lower Costs
Maintenance and Service Friendly

Construction

The Brazed heat exchanger is constructed by a package of thin corrugated metal plates, surrounded by two thicker stabilizing plates. A thin copper foil placed between each of the thin metal plates melts and seals the brazed plate heat exchanger during a vacuum brazing process.

We calculate each solution based on the customer’s requirements to ensure an ideal pressure drop and flow rate. And at the same time, the unit becomes energy-efficient and environmentally friendly. Based on the individual task, we also determine the number of plates and the size of the brazed heat exchangers.

1: At the inlet, the medium enters the heat exchanger and is evenly distributed across the plates, ensuring optimal flow and heat transfer efficiency.

2: The two media flow in separate channels, divided by the plates. This ensures efficient heat transfer without any risk of mixing.

Plates

The design of the corrugated plates optimizes heat transfer by providing a large but compact total surface area whereby the heat can be drawn from one liquid or gas to another.
The plates are optimised to meet specific temperature demands and capacities.

Designed to meet your needs

Our extensive range ensures that we can offer the best solution at the best price and, if required, combine several different types of heat exchangers to ensure that you get the best possible solution.

We are ready to assist you

No matter what challenge you are facing, we are always ready to advise you on the best solution for pumps and plate heat exchangers.

Plate Heat Exchangers:
+45 86 57 13 44
info@sonflow.dk

See further contact information here.

Industries:

The compact brazed heat exchangers can be used in nearly all areas of heating and cooling processes, including:

General cooling/heating
HVAC
Refrigeration
Industrial
Marine
Data centres
Heat pump
Solar heating

Brazed Heat Exchanger Benefits:

Lower operating and life cycle costs
High thermal transfer efficiency
Increased energy savings
Lightweight and easy to handle
Robust, solid construction
Extremely small footprint
Minimal service and maintenance
Solid construction

Brazed Heat Exchangers Productline

	A	B	C	D	E	L1	Max N
SFB18 TL	320 mm	95 mm	270 mm	45 mm	28 mm	(N x 1.3) +8 mm	101
SFB18 TXL	320 mm	95 mm	270 mm	45 mm	28 mm	(N x 1.3) +8 mm	101
SFB19 TK	329 mm	93 mm	279 mm	43 mm	28 mm	(N x 2.3) +8 mm	101
SFB21 TL	291 mm	114 mm	242 mm	65 mm	28 mm	(N x 1.9) +9 mm	101
SFB22 TL	495 mm	114 mm	446 mm	65 mm	28 mm	(N x 1.9) +9 mm	101
SFB25 TL	526 mm	119 mm	479 mm	72 mm	28 mm	(N x 2.3) +8 mm	101
SFB25 TM	526 mm	119 mm	479 mm	72 mm	28 mm	(N x 2.3) +8 mm	101
SFB25 TK	526 mm	119 mm	479 mm	72 mm	28 mm	(N x 2.3) +8 mm	101
SFB31 TL	305 mm	128 mm	242 mm	65 mm	28 mm	(N x 2.1) +9 mm	101
SFB32 TL	509 mm	128 mm	446 mm	65 mm	28 mm	(N x 2.1) +9 mm	151
SFB32 TM	509 mm	128 mm	446 mm	65 mm	28 mm	(N x 2.1) +9 mm	151
SFB32 TK	509 mm	128 mm	446 mm	65 mm	28 mm	(N x 2.1) +9 mm	151
SFB51 TL	618 mm	191 mm	519 mm	92 mm	30 mm	(N x 2.3) +11 mm	201
SFB51 TM	618 mm	191 mm	519 mm	92 mm	30 mm	(N x 2.3) +11 mm	201
SFB51 TK	618 mm	191 mm	519 mm	92 mm	30 mm	(N x 2.3) +11 mm	201
SFB61 TL	617 mm	247 mm	520 mm	150 mm	40 mm	(N x 2.5) +9.5 mm	201
SFB61 TXL	617 mm	247 mm	520 mm	150 mm	40 mm	(N x 2.5) +9.5 mm	201
SFB61 TM	617 mm	247 mm	520 mm	150 mm	40 mm	(N x 2.5) +9.5 mm	201
SFB61 TK	617 mm	247 mm	520 mm	150 mm	40 mm	(N x 2.5) +9.5 mm	201
SFB81 TL	748 mm	330 mm	623 mm	205 mm		(N x 2.3) +12 mm	271
SFB81 TM	748 mm	330 mm	623 mm	205 mm		(N x 2.3) +12 mm	271
SFB81 TK	748 mm	330 mm	623 mm	205 mm		(N x 2.3) +12 mm	271
SFB101 TL	1004 mm	381 mm	862 mm	239 mm		(N x 2.4) +10 mm	271
SFB101 TM	1004 mm	381 mm	862 mm	239 mm		(N x 2.4) +10 mm	271
SFB101 TK	1004 mm	381 mm	862 mm	239 mm		(N x 2.4) +10 mm	271

Measurements are in mm
N = Number of plates

Measurement of a brazed heat exchanger from SonFlow

Industries

Specifications

Cleaning and maintenance

All our plate heat exchangers are designed with a focus on providing easy access for quick and hassle-free inspection, maintenance and cleaning.

The plates in our brazed plate heat exchangers are made from stainless steel, ensuring they are easy to clean.
The heat exchanger supports CIP-cleaning (Cleaning in Place), allowing it to be cleaned directly within the system without requiring disassembly or relocation. This feature simplifies post-use cleaning, ensuring that your system remains free from contamination in the next production cycle.

Find our guide for CIP-Cleaning our Brazed Heat Exchanger here.

Flange Connections

Our brazed plate heat exchangers SFB81 and SFB101 can be supplied with robust flange connections for secure and reliable integration into your piping system.

Flanges provide a strong mechanical joint, making them ideal for applications with higher pressures, larger pipe diameters, or systems requiring frequent disassembly for maintenance.
Manufactured from high-quality, corrosion-resistant materials, the flanges ensure a long service life and leak-free performance.

Insulation Jackets

SonFlow brazed plate heat exchangers can be delivered with insulation jackets to reduce energy consumption and prevent condensation and ice formation.

Thermal insulation jackets reduce energy waste by preventing excessive heat and cold loss. The jackets also create a safer working environment by protecting against burns and scalds.
The insulation jackets are available in high-quality glass wool or polyurethane foam, encased by an aluminium plate.
The jackets are manufactured in sections joined together with spring locks, ensuring a smooth installation and an effective assembly/disassembly process for easy maintenance.

Specifications

	SFB18	SFB19	SFB21	SFB22	SFB25	SFB31	SFB32	SFB51	SFB61	SFB81	SFB101
MATERIALS
Plate material: AISI 316	X	X	X	X	X	X	X	X	X	X	X
Brazing material: Copper	X	X	X	X	X	X	X	X	X	X	X
MAX DESIGN PRESSURE
16 bar (232 PSI)								X	X	X	X
25 bar (362 PSI)	X	X	X	X	X	X	X	X	X	X	X
40 bar (580 PSI)						X	X	X	X
TEMPERATURE
-100 to 185˚C (-148 til 365˚F)	X	X	X	X	X	X	X	X	X	X	X
CONSTRUCTION STANDARDS
EN13445 (PED 2014/68/EU)	X	X	X	X	X	X	X	X	X	X	X
ASME Section VIII, Div. 1	X	X	X	X	X	X	X	X	X	X	X
CONNECTIONS
¾” inside pipe thread ISO 7-R	X	X	X	X	X
¾” outside pipe thread ISO 7-R	X	X				X	X
1” Pipe Thread ISO 7-R	X	X	X	X	X	X	X
1 ¼” Pipe Thread ISO 7-R						X	X
1 ½” Pipe Thread ISO 7-R						X	X
2” Pipe Thread ISO 7-R								X	X
2 ½” Pipe Thread ISO 7-R									X
Ø 22.3 - M34 x1.5						X	X
Ø 28.2 - M34 x1.5						X	X
Ø 42.2								X
Ø 54.2 - ISO 7-R 1 ½”									X
Ø 70.2 - ISO 7-R 3”									X
DN 80 Flange SS PN16										X
DN 80 Flange SS PN25										X
DN 100 Flange SS PN16											X
DN 100 Flange SS PN25											X
3” Flange SS ANSI B16.5 #300										X
3” Flange SS ANSI B16.5 #150										X
4” Flange SS ANSI B16.5 #150											X
4” Flange SS ANSI B16.5 #300											X
NPT threads upon request	X	X	X	X	X	X	X	X	X
ACCESSORIES
Insulation jackets	X	X	X	X	X	X	X	X	X	X	X
Foundation feet	X	X	X	X	X	X	X	X	X	X	X
Mounting brackets	X	X	X	X	X	X	X	X