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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