异径管也叫大小头，两端管口直径不同，用于连接不同直径的管子或法兰进行变径。
Different-diameter pipe size head, also called tube diameter at different, used to connect different diameter of pipe or flange diameter changes on.
所述喷管容纳在连接件(7)中，该连接件通过连接到用于管口的可枢转盖(9)的凸轮(8)可以移动。
The spout is accommodated in a junction member (7), which is movable by a CAM (8) connected to a pivotal cover (9) for the mouthpiece.
分支装置使用管托状的密封件通过主管上的管口将支管连接到主管上。
A branching device connects a branch pipe to a main pipe through an orifice in the main pipe utilizing a saddle-like sealing member.
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