
Hello If it does not bother you that there is a piece in sight you can crush about five centimeters from the wall (well crushed) then cut and make a fold in the flattened part to avoid leaks (all without using a zipper) since two things can happen 1 ° the internal pipe is lead and when heating is disarmed 2 that you do not realize and although the internal is hydrobronz a loss occurs. Now if you don't mind breaking a tile, first you would see what's on the wall. Regards
Hello LUCHO: apart from what MDQ said, another option is to chop a little and see if I don't have the pipe very deep inside and you will find a thread.
LUCK
Thanks for the answers guys, I am left with the option to snack because I don't have a welder. I will do it on Sunday with more time, one more question: do you have an approximate idea in what years these flexible lead was installed? To get an idea of the age of the house.
Regards!