What is the connection method of ductile iron pipe

1, first clean the nozzle, clean up all the residue on the plug.

2, next, clean the rubber ring cover and the rubber ring cover, wipe off any adhesive dirt, put the rubber ring cover in the socket in the figure 8 groove, and along the rubber ring cover compacts around it.

3. Then coat a layer of lubricant on its rubber ring and rubber ring, insert the push tube into the socket and check again.