公开(公告)号：US3572369A

公开(公告)日：1971-03-23

申请号：US3572369D

申请日：1969-02-07

申请人： WILLIAM C KAUFMAN

发明人： KAUFMAN WILLIAM C

IPC分类号： F16K43/00 ,  F16K1/44

CPC分类号： F16K43/006 ,  Y10T137/6065 ,  Y10T137/6069 ,  Y10T137/6092 ,  Y10T137/87997

摘要： A VALVE IS DISCLOSED WHICH PERMITS A SEALING ELEMENT ON A FLOW CONTROL MEMBER, SUCH AS A WASHER, TO BE REMOVED FOR REPAIR OR REPLACEMENT WHILE ALLOWING FLOW BETWEEN THE INLET AND OUTLET CHAMBERS OF THE VALVE, THERE-

BY PREVENTING THE NECESSITY OF SHUTTING OFF FLOW DURING SUCH REPLACEMENT.