I installed two of these in the past 12 years, not I am out to the 3rd one because I bought another one as a back up, and bad mistake. It leaked on the top, leaked on the bottom where the hose connects. Could not fix it. So, I am changing the entire assembly. Lot of labor in taking out and putting it back as well. 
I can't believe they sell a junk like this. [This review was collected as part of a promotion.]