MULTI-WAY VALVE

A multi-way valve (100) includes a valve seat (20) and a valve core (10). The valve core (10) is rotatably disposed in the valve seat (20), the valve seat (20) is provided with a plurality of valve port groups, each valve port group includes a plurality of valve ports, the valve core (10) is provided with communication structure groups corresponding to the valve port groups, respectively, and each of the communication structure groups further includes a plurality of communication structures arranged along a circumferential direction of the valve core (10). When the valve core (10) is rotated to different rotation positions, valve ports in different valve port groups form different communication states. Only one valve core (10) is required to make a two-way proportional valves, three-way proportional valve, and a four-way proportional valve achieve different communication states, with simple control, compact structure and low cost.