Hey, I'm a new plumber with a school division. My boss is gone for a month, so I thought i would direct my dumb questions to someone else. I have a leaking flush tank that serves just one urinal. Wondering if they make a flushvalve for 1/2" supply, or if i can just use a reducer. If anyone can help me out that would be good. Or, I probably should just ask a whole saler. Thank you