公开(公告)号：WO1984003546A1

公开(公告)日：1984-09-13

申请号：PCT/US1984000331

申请日：1984-03-06

Applicant: FMC CORPORATION

Inventor： FMC CORPORATION ,  REGITZ, Alfred, P. ,  BARRETT, Stephen, P. ,  JENNINGS, Charles, E. ,  KEENE, Kendall, E. ,  KOLEILAT, Bashir, M. ,  McINTYRE, John, N. ,  RIESS, Ronald, L. ,  WILLIAMS, Michael, R.

IPC: F16K17/38

CPC classification number: F16K3/0236 ,  F16K17/383 ,  F16K41/14 ,  Y10T137/1797

Abstract: A stem-operated fire-resistant gate valve including an improved metal-to-metal stem backseat fusible ring (52) assemblies for facilitating automatic stem backseating at pre-selected temperatures, spring enhancement of the backseating procedure, and an improved metal-to-metal gate seat (70).

Abstract translation: 一种杆式操作的耐火闸阀，包括改进的金属对金属杆后座可熔环（52）组件，用于在预选温度下促进自动杆后座，弹性增强后挡程序，以及改进的金属 - 金属门座（70）。

公开(公告)号：WO1983003883A1

公开(公告)日：1983-11-10

申请号：PCT/US1983000633

申请日：1983-05-02

Applicant: FMC CORPORATION

Inventor： FMC CORPORATION ,  JENNINGS, Charles, E. ,  TREUE, Thomas, N. ,  KOLEILAT, Bashir, M.

IPC: F16L17/06

CPC classification number: F16J15/0887 ,  E21B33/03 ,  E21B2033/005 ,  F16L17/08

Abstract: A multi-purpose metal-to-metal seal system providing fluid-tight integrity at the area of contact between the seal element (10) and the surface (18) against which it bears, throughout wide variations in pressure and temperature, and especially during and following exposure to a fire atmosphere.