Hi I need to join my main cold water supply which is lead pipe with 1" diameter (acutally 26mm) to a copper 22mm pipe. I have looked at the availed lead loc sizez and am confused, there apears to be a 3/4 to 22mm coper adapter, but is 3/4" the outside lead diameter or the inside diameter.
Can anyone shed any light on the lead pipe sizes and what the dimension relates to ie inside or outside.
Can anyone shed any light on the lead pipe sizes and what the dimension relates to ie inside or outside.