Ferrule needle valve a valve used to cut off or regulate flow. The valve of the ferrule needle valve is needle shaped and acts along the water flow direction to change the overflow sectional area and adjust the air flow. The current fine-tuning valve requires the valve port to be opened gradually, which can be adjusted continuously and slightly from closing to opening. Such ferrule needle valve sealing materials include PTFE seal, red copper seal and cemented carbide seal; Moreover, according to different pressures and temperatures, the ferrule needle valve adopts special structure and corresponding sealing, so as to ensure that the valve will not leak under the working pressure. Under such conditions, the sealing will not deform under the corresponding temperature, and the phenomenon of loose sealing will not occur on the premise of no deformation.