Liquid flow constant control valve

The utility model relates to a liquid flow constant control valve, its characterized in that: including last valve body, lower valve body, cushion and mobilizable case, it is equipped with the internal thread to go up the valve body, down the valve body be equipped with with last valve body matched with external screw thread, go up valve body and valve body down through interior thread connection and form and go up the valve body and the valve body cavity after valve body set closes down, in the valve body cavity, valve body to the lower axial of valve body is equipped with foraminiferous cushion and mobilizable case in proper order on the edge, mobilizable case includes semicircular sealing and cylindric guide part, and the surface of semicircular sealing is equipped with the arch, is equipped with the valve core through hole that can supply liquid circulation on the circumference wall of the guide part of cylinder, foraminiferous cushion be equipped with with the sealed face of semicircular sealing laminati