This product has worked well since installation 1 month ago. It was used to replace the existing unit that lasted 10 years on the Toto toilet. A new fill valve assembly that includes this product as part of the assembly was not required, thus saving some $$. The old one wore out causing a leak that resulted in the fill valve stoping and re-starting during the fill cycle within the water closet. This is a symptom to watch for if anyone reading this has a similar problem. It's the only product that will work with the Toto Carlye. Also had to replace the flush gasket that wore out. Only wish I had purchased 2 of them instead of 1 as they are useful to have in inventory for the next time this happens. Amen!
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