| 摘要 |
A shut-off valve (100) for use in a fluid transport or storage system includes a body (104) defining an inlet port (118), an outlet port (122), and a fluid flow passageway (124) extending between the inlet port and the outlet port, a seat (150) arranged in the body adjacent the outlet port, a shaft (112) at least partially disposed in the body, and a control assembly (154) disposed in the body and operatively coupled to the shaft. The control assembly is movable between a closed position, in which a portion of the control assembly sealingly engages the seat to seal the outlet port, and an open position, in which the control assembly is spaced away from the outlet port and substantially outside of the fluid flow passageway, such that the control assembly provides minimal flow-restriction to fluid flowing through the fluid flow passageway. |
