Turn the coupling with the hand, should feel can easily turn the gear pump, no abnormal phenomenon such as clamping, then can be piping.
用手转动联轴器时,应感觉到齿轮泵能够轻松地转动,没有卡紧等异常现象出现,然后才可以配管。
2
The utility model belongs to a scope of electric pipe connection pieces, in particular to a muff-couplingclamping closed galvanized steel conduit joint device.