Electric valve

An electric valve, comprising a valve component, wherein the valve component comprises a lead screw and a valve core assembly, the lead screw is threadedly connected with the valve core assembly, the valve component is provided with a valve port, and the lead screw is configured to drive the valve core assembly to approach or move away from the valve port to adjust an opening degree of the valve port, wherein the valve core assembly comprises an internal thread section, the lead screw is provided with an external thread section, the valve core assembly is threadedly connected with the lead screw by means of the fitting of the internal thread section and the external thread section, and a material of at least a portion, corresponding to the internal thread section, of the valve core assembly comprises a plastic material;

• the valve core assembly comprises a nut member and a valve core, the valve core covers a part of the nut member, the valve core is fixedly connected with the nut member, and a material of the nut member comprises a plastic material;
• the nut member is provided with a threaded hole, a peripheral side wall forming the threaded hole is provided with the internal thread section, an end of the lead screw is provided with the external thread section, the end of the lead screw provided with the external thread section extends into the threaded hole, and the external thread section is in a thread fit with the internal thread section;
• and
• the nut member is integrally formed by injection molding with the valve core being used as an injection mold insert, and the nut member is fixed to the valve core by injection molding.