On True union Ball, Check and Diaphragm valves, remove union nuts and end connectors before priming and cementing connections.

对于真活接球阀、止回阀和隔膜阀，在上底漆和粘固剂连接之前，先拆卸活接头螺母和端口连接件。

youdao

Thus, the True union design permits the replacement of a fouled valve with a new body cartridge, which will fit the old union nuts that are likely to be permanently attached to adjacent piping.

因此，这种TrueUnion结构使得人们可以用新的阀腔更换肮脏的阀门，新旧管接螺母能够互相配合，好像永久性连接着邻近的管道上。

youdao

Thus, the True union design permits the replacement of a fouled valve with a new body cartridge, which will fit the old union nuts that are likely to be permanently attached to adjacent piping.

因此，这种TrueUnion结构使得人们可以用新的阀腔更换肮脏的阀门，新旧管接螺母能够互相配合，好像永久性连接着邻近的管道上。

youdao