在我们的例子中，通常在紧急情况防井喷器能够密封住井喷。由于一系列的缺点和错误，妨碍该设备的正常运作，因此它没能密封住。
A series of flaws and errors got in the way of the normal operation of the device, and so it did not seal the well.
平坦的闸板底部与阀座之间能够实现全周长阀座密封，避免阀座出现可能淤积流体介质、妨碍阀门完全关闭的底部洞隙。
The flat bottom gate provides full perimeter seating against the seat, eliminating pocket in the bottom of the seat that can trap process media and prevent the valve from fully closing.
这种情况通常发生在排气门。任何妨碍排气门密封面贴合的情况都会导致气门烧伤。
Valve Burning. This is usually an exhaust-valve problem. Any condition that prevents normal exhaust-valve seating may lead to valve Burning.
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