Ultrahigh pressure regulating valve

The invention discloses an ultrahigh pressure regulating valve which comprises a valve body assembly, a valve rod assembly and a cylinder body. A through water flow channel is formed in the valve body assembly, and an inserting hole is formed in the top wall of the valve body assembly. A hollow cavity is formed in the cylinder body, and a diaphragm capable of agitating up and down is arranged in the cavity; the top of the valve rod assembly is connected to the lower side of the diaphragm. An internal thread section is arranged at the top of the insertion hole and is used for threaded connection of the lower end of the sleeve to the upper end of the insertion hole; the upper end of the sleeve is fixedly connected to the lower end of the cylinder; the middle of the valve rod assembly can be inserted into the sleeve in an up-and-down sliding mode, and an upper assembly composed of the valve rod assembly, the sleeve and the cylinder body can be integrally pulled out of the valve body assembly. The device is simpl