I am installing a free standing tub (no shower) against a wall and wish to locate the (non-diverter) tub spout toward the foot-end of the tub and the valve control toward the head end. Both the spout and the valve will be on the same wall and about 21" from each other. The spout and valve will be more or less horizontally aligned. I don't see any problem with doing it this way. Because I am not a trained plumbing professional, I thought I should ask because one doesn't know what they don't know. Can I do this?