公开(公告)号：US3919756A

公开(公告)日：1975-11-18

申请号：US46115274

申请日：1974-04-15

Applicant: SAAB SCANIA AB

Inventor： KAJRUP BENGT AKE

IPC: B23P15/00 ,  B23P11/00

CPC classification number: B23P15/001 ,  Y10T29/49414 ,  Y10T29/49421 ,  Y10T29/49863 ,  Y10T29/49934

Abstract: The body of a ball plug valve comprises a unitary outer tubular part and annular seat members, one at each side of the valve element, coaxially secured therein as by welds around their axially outer ends. A resilient seal ring on the inner end of each seat member is compressed between it and the valve element. Until welding is completed, the axial positions of the seat members relative to the tubular part are established by the valve element stem, confined to rotation relative to said part, and by a fixture exerting axial converging force on the seat members. Before welding, and after the fixture-held assembly is inserted, end portions of the tubular part are reduced in diameter to define ports smaller than the valve element.

Abstract translation: 球形旋塞阀的主体包括一体的外管状部件和环形座部件，一个在阀元件的每一侧，通过围绕其轴向外端部的焊缝同轴固定在其中。 每个座椅构件的内端上的弹性密封环在其与阀元件之间被压缩。 在焊接完成之前，座件相对于管状部件的轴向位置由阀元件杆构成，限定为相对于所述部件的旋转，以及通过在座椅构件上施加轴向会聚力的夹具。 在焊接之前，并且在插入固定装置的组件之后，管状部件的端部直径减小以限定小于阀元件的端口。