The water distributor and collector are set up to facilitate the connection of parallel pipelines of various water loops, playing a pressure balancing role to ensure uniform flow distribution and ensure that the flow of branch loops in each area meets the load demand. At the same time, the water flow of each branch loop should be collected and fed back into the main water pipe to achieve circular operation and achieve more energy-saving effects, which can simultaneously meet the needs of heating and cooling. Widely used in boilers, central air conditioning, industrial circulating cooling water systems, and hot water systems.