I am assuming this is a USA forum, so I will ask- I have a water main feed tube/ pipe, black in color, feels exactly like HDPE, is 1 3/8" ID (1.375) and 1.900" OD., same as 1 1/2" iron pipe. It was installed in 1971/72 in Los Angeles County. I need to adapt to it to install a new water meter/...