Brazed single-pass plate heat exchanger SAFEPLATE LB31SP-20-5/4" (connections: 4 male threads) 0203-0401

Safety and efficiency in a compact housing

The SAFEPLATE series brazed plate heat exchanger is a solution that combines high thermal efficiency with a unique safety system. A key feature of this device is the use of a double-wall system and a special slot in the side surface of the housing. Thanks to this solution, in the event of potential damage to the internal plates, fluids from both circuits do not mix. Instead, the leak is visually detectable through the slot, allowing for an immediate reaction and preventing serious installation failures. This is particularly important in systems where contact between media (e.g., refrigerant and heating water) would be critical to safety or system performance.

Construction resistant to extreme conditions

The device has been designed for operation in challenging thermal and pressure conditions. The stainless steel construction and copper brazing ensure high corrosion resistance and durable connections. The vacuum furnace brazing process guarantees a solid bond between the plates, eliminating the risk of leaks resulting from mechanical weakening. As a result, the heat exchanger easily handles:

• Maximum flow temperature of up to 230 °C, making it useful even in steam or high-temperature installations.
• Maximum working pressure of 30 bar, allowing for installation in high-pressure systems without the need for additional overload protection.

The optimal shaping of the flow channels is another structural advantage. Engineers have achieved a compromise between low flow resistance and high heat exchange efficiency. This layout not only improves energy efficiency but also prevents the accumulation of contaminants inside the heat exchanger, resulting in a longer maintenance-free period and reduced maintenance needs.

Application and ease of installation

The LB31SP-20-5/4" single-flow model features large connections with a nominal diameter of 1 1/4 inches (32 mm) on both sides (primary and secondary). These connections have an external thread, which facilitates integration with existing piping installations. Despite relatively high thermal loads, the device maintains compact dimensions: a height of 286 mm and a width of 123 mm. This design allows for installation even in confined spaces while still providing high thermal capacity. It is worth noting that the design also allows the heat exchanger to be installed in insulation ("For insulation: yes"), which is important when designing modern heating systems that require high thermal insulation. Simple installation and disassembly ensure that replacing or servicing the device does not generate excessive installation downtime.

By combining a solid metal construction with an intelligent fault detection system, this heat exchanger serves as a reliable component for industrial installations and advanced heating and cooling systems where reliability is a priority. All key data regarding connection diameters (1 1/4"), maximum operating parameters (230 °C / 30 bar), and external dimensions have been included in the functional description above to facilitate device selection for specific installation conditions without the need to consult technical tables while reading the benefits description.