Ooff valve is retrieved to thick mesh powder of metal finishing additive grader

The utility model discloses an ooff valve is retrieved to thick mesh powder of metal finishing additive grader, including valve body, release handle and release handle seat, valve body fixed connection is at the lower extreme of release handle and pass release handle seat, the lower extreme of release handle buckle outwards and the release handle seat between leave the interval, extend forming is buckled outwards to the upper end of release handle has the operating portion, has seted up curved adjustment tank on the release handle seat, the adjustment tank fixed connection on expansion screw and the release handle seat is passed through at the middle part of release handle, the valve body extends to be installed in circulation return line, the accessible unclamps the expansion screw, and the operating portion that the staff was used in the release handle upper end makes the release handle move along the adjustment tank can realize the rotation of application valve body in circulation return line, installs to