Novel ball valve sealed firmly

The utility model provides a novel ball valve sealed firmly, which comprises the following components: a valve body, it has the media channel who runs through the valve body and control the terminal surface to open on the valve body, it has the installation passageway to open on the valve body, media channel is equipped with the case with the cross section of installation passageway, the left and right sides of case all is equipped with the disk seat, all be fixed with sealed boss on the sealed face of each disk seat, the lateral part of each disk seat all is equipped with the drum no. 1 of sealed pipe thread connection in media channel department, all install on each drum no. 1 and be used for pressing the pressure spring no. 1 who moves the disk seat and remove towards the case direction, all open a set of recess along a drum central equipartition on the outer terminal surface of each drum no. 1, the top of installation passageway is fixed with the valve gap, the bottom of installation passageway is fixed with and is used for the sealed sealed lid of firmly installing the passageway bottom, it has the stem seal who is used for the rotating valve core to cover to be fixed with the brace table that is used for supporting the case to peg graft on the valve gap, the equal surfacing of the sphere of case and the surface of sealed boss has ni -based hard alloy layer. The utility model discloses structural design is ingenious, reasonable, is worth popularizing and applying.