Gate and globe metal to met seats cannot provide bubble tight shut-off.
闸阀和截止阀(金属与金属连接)阀座不具备不透气关闭的性能。
The perimeter seat design gives bubble tight shutoff in either direction.
这种全周长阀座结构能够实现任何方向的气泡级密封关闭效果。
The perimeter seat design gives bubble tight shutoff in either direction.
这种全周长阀座结构能够实现任何方向的气泡级密封关闭效果。
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