PVC－U Pipes and Fittings Installation and Using Way Rubber ring joint (R-R)construction way ◆Clean the pipe insertion end and mark the insertion length. ◆Clean the groove in the pipe expansion end and the rubber ring,Then put the rubber ring into the groove. ◆Apply the lubricant to the pipe inserting end before inserting it to the pipe expansion end.Insert the small-bore pipes with human power,and insert the large-bore pipes with the tightener. Adhesive joint(T-S)construction way ◆Clean the pipe insertion end. ◆Clean the inner wall of the pipe expansion end ,then apply the special glue with the special brush to the inner wall of the pipe expansion end and the pipe insertion pare and insert in one time.Lay the thick wooden board under the medium and large diameter pipe;strike with wood ham-mer to enhance sealing effect. ◆Clean the overflowed glue with cloth. 安装示意图