| 摘要 |
In a valve assembly (1) comprising a valve housing (2), a valve seat (3) and a valve body (4) adapted to fit in closing relationship in said valve se at (3) in a closed position, said housing (2) has an inlet (5) and an outlet (6) for a pressurized fluid, positioned upstream and downstream of the valv e members, respectively. The valve has a closed position being maintained by a closing force e.g. from a compression spring (7) and an open position, wh erein the valve seat (3) and/or the valve body (4) are moved away from each other by an activating mechanism. A pressure balancing line (11) is provided internally or externally of the housing (2), wherein fluid of the fluid flo w downstream of the moveable valve member (3, 4) is in fluid connection with the opposite end of said member, when in use.
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