Korky 723X Top Mount 2-Inch Flush Valve and Premium Flapper

So I have a Karat 1 piece toilet that I bought over 20(?) years ago from the Home Depot. It's in my basement. Luckily, there are 2 other toilets in the house so I could diagnose the issue with this toilet. I first determined that the Fluidmaster fill valve was leaking. I replaced that and the toilet was still leaking. Through trial and error, I determined that the toilet wasn't leaking from the flapper. It was the flush valve which has a rubber gasket that was leaking. It wasn't replaceable, so this fit the bill. First of all, this item did NOT come with instructions and that is needed. I want to thank reviewer Peaty for his photos and explanations. Without that, with no instructions, not even at Korky's website, I would have been in the dark. A little trial and error with installing the valve with the tool. Also I had to cut the overflow pipe since it was too tall to fit in my toilet. I first tried a new Fluidmaster flapper that I had in my house but the toilet was still leaking through the flapper. I had to use the Korky flapper that came with the flush valve. After adjusting the chain, it's flushing OK with no apparent leaks. For the final test, I put food coloring in the tank. So far, no food coloring in the bowl. The flush valve is a bit pricey when compared to the Fluidmaster fill valve, but it is cheaper than buying a new toilet. Hopefully, with a new fill and flush value, I will be able to use this toilet for many more years.

Product arrived in factory new condition. All pertinent parts related to the function and installation of the replacement item were enclosed EXCEPT any hint of instructions on how to actually accomplish the feat. To be honest a few seconds searching for "how to install top mount flush valve" revealed a bounty of results, although with that being said it sure couldn't have cost but a few cents to add a generic stick man cartoon type of guide to give a helping hand. The video uploaded by "Allysa" which is shown on the item order page pretty much lets you know what needs to take place if you are removing a similar valve assembly, so a big "Thanks for the assist!" Initial placement may require a turn or three to loosen the fit before it seats firmly in place before tightening. Saved the price of a new replacement toilet we were having to consider before finding this solution. Works like a charm and as easy as it can possible get to install (once you understand what needs to transpire). Save the plumbing bill and do this bit yourself!

Have to preface this with a HUGE THANKS to prior reviewer Peaty for the guidance... I was struggling to find a solution for a constantly running old toilet in my new house. Was very difficult finding a way to remove the old flush valve, but once his review said this came with the tool to remove it (a white circle that attaches to a standard ratchet, and just requires a long extension), it was SO EASY to remove and replace. This replaces LAVELLE models for a 1-piece toilet, which was another area of confusion for me. Thank you again to Peaty and his pictures, and for this product!

I have replaced toilet valves and flappers in traditional toilets a few times over the years. This was my first experience replacing a valve and flapper in a 1-piece toilet. The flapper is relatively easy, but I found that it was the entire valve that was leaking (around the outer gasket I could see some air bubbles. This comes with a plastic tool that fits your standard socket wrench. GET A WRENCH EXTENDER, or you will have to unsatisfyingly turn that little plastic disk a quarter of a turn for what will feel like an eternity. The tool ended up breaking on the first one I was sent. Amazon was nice enough to send a replacement. For the life of me, I couldn't figure out why some flushes were more powerful and some were weaker in the past- but it was because it was slowly leaking into the bowl and then out. This product fixed all of my problems, and every flush is now powerful. I feel bad that I took so long to investigate! Plunger is now in the closet, not next to the toilet anymore!

taking the old one out wasn't easy. it's made of plastic and prone to braking. the valve comes with a tool but it was so thin the wrench just rounded out the connection. thankfully i had purchased the tool and it was plastic as well but much thicker. hard to explain but i had to use a flat piece of metal and ground it down to fit in the drain part to take old valve out, once i got it out, putting the new one is was easy. i thought i was gonna have to use multi tool and cut old one out but i got it. i like the new product and it works fine, no leaks once installed. my first time replacing in a 1 piece toilet.

The parts did not come in consumer packaging, except for the flapper. There were no instructions or parts list included, which made me initially wonder if the product had been previously returned. The fill tube also lacks a clip or guide for the hose, which would have been helpful—especially at this price point. Despite these issues, I was able to figure out the installation on my own, and so far, the product appears to be working as expected. I’m giving it 3 stars mainly due to the lack of instructions and the fact that it’s advertised as a Korky product, when only the flapper appears to be.

Good deal

The device was delivered earlier than expected, it fit and worked correctly.

The product fit perfectly and stopped a slow leak due to the old flush unit where the rubber gasket had failed to the point that it was breaking apart. This replacement came with the installation tool and all went well. Highly recommend this as a perfect replacement

Had to return this item , it did not work for my AS toilet , the bottom piece was too long , for sure it will work on the right toilet .

A bit expensive for a piece of plastic but it does the job, so no complaints. Since it’s a universal unit, it requires a bit of fiddling. For me, I had to cut the top of the tube by about 1 ¼” (pic #1) but more importantly, I had to cut about a ¼” of the tabs at the bottom of the plastic 2” screw (pic #2). Because of my American Standard model 2092, these tabs were hitting the bottom of the hole (pic #3) and preventing a proper seal (I think another reviewer posted the same problem). Once cut, the seal was tight and the unit worked flawlessly (pic #4). Very happy.