In Type 2V heat exchanger, one of the fluids circulates along the axis of the unit, and the other circulates in a spiral flow. The crossing channel is open at the top and bottom, while the spiral channel is closed at the top and bottom. The body of the unit is equipped with extensions shells on the 2 sides where the connections are located.
See the user manual alfa-laval-spiral-instruction-manual-en.pdf for more details.