Onespeedbiker
New Member
I am having installed a Roman style bathtub faucet. I have ordered the rough and cover kits. Now I want to get the shutoff valves and supply lines. Currently there are 1/2 copper pipes with compression rings and the rough kit is also 1/2" copper. I would like to maintain 1/2" ID but I am confused by the valve and supply line nomenclature. I understand that 1/2 NOM In with valve means it will attach to the 1/2" copper, but what would be the nomenclature for the supply line out to maintain 1/2" ID and the supply line to connect to 1/2 copper at the faucet line?