I purchased this product because my family had the same & assummed I would receive the a good product. But it is no good. I have had it installed & have replaced the water valve & it still continues to run. Even the plumbers ae perplexed. Now it still continues to run & I will have to have a plumber out to try & find the problem. It probably will demand a water stopper replacement. And that means I will have replaced all the moving parts to get it to run properly. I am totally dissastified at this toilet. Maybe the price should have warned me not to purchase.