Hi Willie Nelson, Thank you for your question. As a general rule of thumb if the set screw is on the back of your existing roman tub spout the newer trims should work. If the set screw is on the front of the spout, or if there is no set screw at all on the spout the rough in valve will have to be changed as well. Check that the spout connection on the existing valve matches the connection on the new rough in R2707. Here is the link.http://www.deltafaucet.com/bath/det...
answered 3 months, 2 weeks ago