Why can't double-sealed valves be used as shut-off valves?

Author：Shanghai Lianggong ValvesTime：2025-06-18 03:06:54Number of views

Abstract：

The advantage of the valve core of a double-seat valve is its force balance structure, which allows for a large pressure difference. However, its prominent drawback is that the two sealing surfaces ca

The advantage of the valve core of a double-seat valve is its force balance structure, which allows for a large pressure difference. However, its prominent

drawback is that the two sealing surfaces cannot make good contact simultaneously, resulting in significant leakage. If it is artificially and forcibly used

in cut-off situations, the effect is obviously not good. Even if many improvements have been made to it (such as double-sealed sleeve valves), it is still

not advisable.

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