Valve diffusers are usually used in air conditioning and ventilationsystems oflarge shopping malls, subway stations, airport stations,greenhouses and other indoor places. Through the temperaturechamber, the flow rate of cold and wamm air can be automaticallycontrolled, and the indoor constant temperature state can berealized, which not only greatly saves energy consumption, butalso effectively prevents excessive fluctuation of roomtemperature, and the control is accurate, sensitive, stable andreliable. The diffuser outlet can be installed in each room separately, whicheffectively sowes the problem that the air volume of central airconditioning and large-scale ventilation system can not becontralled independently, The air volume of tuyere is controlled bythermosensitive temperature package, without power supply, longservice life and stable and reliable perfommance. By sensing theindoor temperature,the thermostat controls the opening andclosing size oftheairoutlet, soas toadjust the air volume.