For foot valve, replace inlet end connection with an F. V. screen housing assembly.
对于底阀，用一个F.V。滤网外壳组件更换进口连接管接头。
An O-ring seals the relief valve body to the main housing.
用一个O形环密封安全阀阀体与主外壳。
Main valve housing is a key part of giant turbines.
主汽门阀壳是大型汽轮机的关键零件。
Main valve housing is a key part of giant turbines.
主汽门阀壳是大型汽轮机的关键零件。
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