Fluid pressure on one side of the gate presses it against the opposite seat with great force and improves the seal.

闸板压力侧的流体压力使另一侧的阀座受较大的力，提高了密封性。

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To increase packing life and provide a superior seal, the gate edges are rounded.

为了延长密封填料的使用寿命，提供超级密封性能，闸板边缘是圆形的。

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Now gate valves have been replaced by eccentric metal hard seal ball valves in the construction of some new unit and old unit revamping.

偏心金属硬密封球阀已在一些新装置建设和老装置改造中取代了一部分闸阀而得到应用。

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