I asked before about condensation on copper and blue plastic pipe. I duly lagged them. The problem is now, the white plastic push fit right angle connector where the water sits inside,is always wet with condensation.How can I prevent this ? Can I lag it ?
Yoy can insulate anything you want to, the appearance of the result is dependent on how you sdo it. Insulation cannot possibly do any harm in this case (in the very rare cases it is blamed for adverse effects the truth is the total system was not correctly understood).
I think we established this pipe is in your washing room / utility. The water you are finding is only condensate from the water vapour in the room condensing on the cold water pipe. It won't do any harm (but you can lag it, as the above says).