I have a chalenge. without putting in a whole new system i have an old system that is run with 1/2 inch gal steel pipes in the yard. this is only one zone but it is run by a 6hp in-ground pump that can sustain 70 pounds of presure. i am gonna try to unscrew the vertical pipe from the 90 and install a tee. but if it breaks and i have to cut it before the 90 what would be the options?? i have seen the new funny pipe that is blue in color and has a connector that just is just press on. is there such a thing that will press onto the steel pipe. i also have seen this in copper. has anyone seen something that will help with this??