Thermosyphon vessels are utilized in double mechanical seal setups—whether in back-to-back or tandem configurations—to ensure proper lubrication and cooling of seal faces, helping to extend the lifespan of the seals as recommended. These vessels come equipped with an internal cooling coil that helps reduce the temperature of the barrier fluid returning from the seal to the thermosyphon system. Larger capacity options, up to 20 liters, are available upon request for enhanced operation.