The original design of valve plate to open the gas valve is hanging in the channel, the possession of an effective diameter about 20%.

而原设计阀板打开是悬于阀体的气体通道内，占有有效通径20%左右。

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When valve is transporting, driving device and driving part should be hanging, avoid of damaging driving shaft because of larger force.

当阀门运输时传动装置及传动部位应悬空，以防止传动轴受力过大变形损坏。

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