如果流体流速压力无法将阀门支撑在一个较大的开启度并保持在稳定的开启位置，则阀瓣和相关的运动部件可能会处于一种持续振动的状态。
The disc and associated moving parts may be in a constant state of movement if the velocity pressure is not sufficient to hold the valve in a wide open and stable position.
即使在大流速下，也能够确保阀瓣和阀座的精确对准。
Assures perfect alignment of disc and seat even at large flow velocities.
该控制阀用于设定气体燃烧器空气流速。
Control valves are used to set the flow rate of air for gas burners.
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