Management of the branch pipes, respectively, including the return slip and water supply branch, its multi-DN350-DN1500 ranging from steel plate production, belong to the professional manufacture of pressure vessels, the need to install a pressure gauge thermometer. The one hand, it will be the main pipe of the water as needed for traffic distribution to ensure that the regional branch of the loop flow to meet the load needs, but also the flow of each branch circuit brings together, and enter the the backwater trunk pipe to achieve the cycle run. Its backwater re-use, and can achieve more energy saving effect, can meet the needs of heating and cooling, which are widely used in boilers, central air conditioning, industrial circulating cooling water system, hot water system.