Install lug hatch cover side 舱口盖上方安装吊耳
True lug design has factory installed zinc plated or SS 316 lugs and is specially designed for connection to either side of valve.
真法兰结构具有工厂安装的镀锌钢或316不锈钢法兰，特别适用于连接到阀门两侧。
The lug produces a "pinched" effect contact with the groove side.
极耳产生一种“压力”作用与沟槽侧边相接触。
The side of the lock-up set is provided with a semicircle lug boss, which is allocated with the semicircle groove arranged on the shell.
锁止套周侧设置半圆凸台，半圆凸台与设置在壳体上的半圆凹槽相配置。
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