经分析得出：事故原因是减压阀阀座和阀盖的连接螺纹接触高度过小，强度不足，导致螺纹连接失效。
The screw joint of the reducer bonnet and body was concluded as the failure position because of its small contact height.
经分析得出：事故原因是减压阀阀座和阀盖的连接螺纹接触高度过小，强度不足，导致螺纹连接失效。
The screw joint of the reducer bonnet and body was concluded as the failure position because of its small contact height.
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