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

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

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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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