I am in the middle of a bathroom renovation. I would like to install two shower heads. I am not sure what the best way to set this up.

Can I use one set of valves to run both shower heads?

Will the 1/2 inch copper lines allow enough water volume to pressurize both heads from one set of valves, or do I have to install tow sets of water valves?

I would like to use one set of knobs for both shower heads and then an on/off valve to opperate the second shower head. Any advice or help will be greatly appreciated.

Tom

Delta makes a series 18 and 18T shower faucet that would meet your needs. Try Delta Faucet.com for details on their products. I think you will be very disappointed in the design you have described. Two heads on that one 1/2 in. supply line will not perform well. Even if they are identical faucets, one will have a little more pressure than the other and you would need two shut offs between the two heads, not just one.