REPAIRING or PLUG OLD THIN WALLED PVC PIPE

HI Folks,


I had to remove a small branch of a redundant sprinkler line when working on the front yard landscaping. Upon removal of said line to the T I discovered we have very old THIN walled sprinkler line. I was going to cut the T and do a simple line repair, but now I need advice of how to proceed since I searched the UPC code on the pipe and found this info:


- does not interface well with SCHED 40 3/4 PVC

- can crack when cut

- is not PVC weld based??? what is that blue weld??


Solvent Weld Pressure Rated Pipe - Belled End
SDR-21
Listed: NSF-PW Standard 61 Standard 14
Specification: ASTM D 2241


I also found this vid advising to rip out the entire thin walled system, BUT I would rather just PLUG THIS T and leave the thin pipes in the ground. ( since to rip up the old system and install new one is time and money and I don't know how to remove old system )




Because I cut the redundant branch at the T end, and piece the thin walled pipe is still in the 3/4" T, 3/4" plug wont fit. And if it did what weld would I use???


So, what the best way to plug this T?


or should I try to get this blue solvent weld and solvent elbows and pipe somewhere and try to do a line repair - just cut the thin pipe with a dremmel and not squeeze cutters?


Or should I really try to find rip up the line by hiring a plumber?


thanks in advance.