Brazed plate heat exchanger two-pass LC170-40-2S-DN50SS (connections: 6 stainless steel flanges) 0207-1496

Heat Exchanger for Demanding Liquid-to-Liquid Installations

This two-pass plate heat exchanger from the L-line series is a solution designed for installations where high efficiency is a priority while maintaining compact dimensions. The device, designated as model LC170-40-2S, combines 40 plates made of stainless steel, permanently joined through copper brazing in a vacuum furnace. This approach guarantees not only the tightness of the construction but also resistance to extreme operating conditions – the unit withstands a working pressure of up to 30 bar and a flow temperature reaching 230 °C. Thanks to this, it performs well in both standard heating circuits and more demanding liquid-to-liquid cooling systems.

Construction and Flow Optimization

The key to the effective operation of this heat exchanger is the specific shaping of the flow channels. The plates feature a special corrugation pattern that represents a precise compromise between low flow resistance and maximum heat transfer efficiency. Importantly for installers and service technicians, this geometry minimizes the risk of deposit accumulation inside the channels, which translates into a longer service life of the device and reduced maintenance requirements.

The two-pass version (designated by the symbol 2S) offers additional flexibility during installation. Instead of a standard arrangement, this unit has six stainless steel flanged connections (DN50), allowing for more complex circuit configurations without the need for additional manifolds. These connections are adapted for external threading, facilitating integration with existing piping infrastructure.

• Durable copper brazing – this process ensures a permanent bond between the plates, eliminating the risk of leaks typical of rubber gaskets and enabling operation at high temperatures.
• Six DN50 connection arrangement – the possibility to connect three circuits or use in a two-pass configuration without additional hydraulic manifolds.
• Stainless steel material – high corrosion resistance makes the unit suitable for media with varied chemical compositions and difficult operating conditions.
• Compact design – despite the high thermal power resulting from 40 plates, the dimensions (width 258 mm) allow installation in tight boiler room spaces.

Application and Installation Conditions

The device is ready for operation in environments with high thermal loads thanks to its high resistance to pressure and temperature fluctuations. Its construction allows installation in spaces with limited room, while ensuring stable operation under dynamic changes in heating or cooling network parameters. It is worth noting that the heat exchanger is adapted for thermal insulation cladding – which is important for maintaining the energy efficiency of the entire system and preventing heat loss in technical rooms.

Thanks to the simplicity of installation and disassembly, and the absence of consumable parts (such as replaceable gaskets), this model reduces the costs of maintaining the installation over the years. It is a solution dedicated to professionals seeking a reliable component in heating or cooling circuits, where precision of workmanship and resistance to harsh environmental conditions are crucial.