| 摘要 |
A gate valve comprising a valve body (2) provided with an inlet opening (3), an outlet opening (4) and a fluid flow channel (5) connecting the inlet (3) and the outlet (4) openings. The valve body (2) further comprises a control body (6) extending laterally to the fluid flow channel (5) and having an outer opening (7). Also, the gate valve (1) comprises a gate member (8) movable within the control body (6) back and forth through the outer opening (7), between an open position and a closed position, for controlling fluid flow through the flow channel (5). The gate valve (1) further comprises a housing (12) comprising an inlet member (13), an outlet member (14), a top member (15), and a bottom member (16). The gate valve comprises three independent sealing zones (A, B, C) for sealing between housing (12) and valve body (2), wherein the first sealing zone is provided between the valve body (2) and the top member (15), the second sealing zone is provided between the valve body (2) and the inlet member (13), and the third sealing zone is provided between the valve body (2) and the outlet member (14). |
