Double flanged versions are offered as standard on larger size valves where the lay length of the body permits installation of two heavy nuts between the flanges.

 
  • 对于较大通径的阀门,双法兰类型是作为标准配置提供的,大通径阀门的放置长度比较长,在法兰之间足够安装两个重型螺母。
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