SD series intelligent two-phase flow switch group, pressurized heat Exchanger unit  is a host variable speed of sound, through the temperature, flow, pressure, water and other means of sensing and control linkage, and ultimately the heat transfer station equipment safety, stable, intelligent operation, to meet the needs of users with different conditions. Function: SD-CN change the speed of sound by the booster heating unit heat exchanger, temperature control system, circulatory system and supply system, detection and control system components. Users only need to connect supply / return water pipes, steam pipes, make plumbing and heating power can be put into use.Features: Compact, easy to operate, host maintenance-free, can be automatically temperature control, pressure control, outside temperature automatic compensation control, remote control, intelligent control cabinet to run the visual display of the pressure and temperature parameters change information, when needed may join the central control system remote and remote control.