I have a two-pipe hot water heating system.
I want to move a cast iron rad. It is about 3 ft wide and 3 ft tall. Both the inlet and the outlet to the rad are on the same side of the rad, side by side, towards the bottom of the rad. Is it ok to switch the inlet and the outlet? In its new location, it will be easier to pipe the rad with its old inlet as the new outlet.
My other question is about the valve which is an angle valve screwed on to the 1 1/4 in supply pipe coming up thru the floor. I would like to take it apart before heating it up with a torch to unscrew it to prevent burning up rubber parts inside the valve. The packing nut looks like it will come off easily but there is no obvious way to remove the stem of the valve. Perhaps the thick coats of paint on the valve body is making it hard to see how to disassemble the valve. Thanks in advance for your help.