Plate heat exchangers are essential components in refrigeration and many other industrial applications. They impress with their efficiency and versatility and are indispensable in many sectors. A plate heat exchanger is a specially designed device that transfers heat from one medium to another. Their compact design and high performance make them particularly suitable for industrial plants, the process industry, and in refrigeration technology.
The SIGMADUAL semi-welded plate heat exchangers from API Schmidt-Bretten utilize state-of-the-art laser welding technologies, which guarantee the highest precision and reliability in plate processing.
Special features of laser welding technology:
A major advantage of the SIGMADUAL plate heat exchangers is their modular construction. Similar to gasketed plate heat exchangers, modules can be easily replaced or supplemented. This enables quick adaptation to changed operating conditions and ensures maximum flexibility.
A double-welded seam at the heat exchanger plate penetration points provides improved operational safety. This construction effectively protects against leakage and enables safe product separation — an important factor in sensitive industrial applications.
| Temperature | -29°C – 200°C |
| Pressure | Vacuum up to 30 bar |
| Volume flows | In excess of 2,000 m³/h |
| Connections | DN100, DN150, DN200 and DN350 |
| Plates | |
| Standard | AISI 304 (1.4301), 316L (1.4404) |
| Special features | AISI 904 (1.4539), SMO 254 (1.4547), nickel alloy, Ti and Ti-Pd alloy |
| Gaskets | |
| Standard | Nitrile rubber gasket, EPDM, FPM |
| Special features | HNBR, PTFE coated elastomers, FDA materials |
| Attachment method | SIGMAFIX non-adhesive or glued |
| Frame | |
| Material | Enameled carbon steel or stainless steel |
| Connections | |
| Standard | Studs, flanges, aseptic, threaded connections in 316L or 316Ti |
| Special features | 904L, Ti, SMO 254, nickel alloys |
| Norms and standards | |
| Approvals | PED, ASME, ABS, LRS, DNV/GL, BV |