valve inlet meaning in English

阀门进口
进气门

Check modules are installed in the valve body with the seats facing the valve inlet
安装在阀门内的止回模块其阀座应该面对阀门进口。
Check initial pressure to see if full intended line pressure is applied at the valve inlet
检查初始压力，看看是否全部预设管道压力是否应用在阀门进口处。
A butterfly isolation valve cannot be installed directly to the valve inlet flange , as the disc will contact the orifice plate
蝶阀隔离阀不能够直接安装在阀门进口法兰上，因为其阀瓣将会接触到节流板。