一旦安装完毕，手动旋紧的管接螺母就紧压着Chemtrol阀门的密封面。

Upon installation, a hand-tightened union nut serves to compress the face-seal of a Chemtrol valve.

youdao

一旦安装完毕，手动旋紧的管接螺母就紧压着Chemtrol阀门的密封面。

Upon installation, a hand-tightened union nut serves to compress the face-seal of a Chemtrol valve.

youdao