Danco HYR460 HyrdroRight Water-Saving Toilet Tank Repair Kit with Dual Flush Valve, Includes Dual Push Btton Handle in Chrome

I had some reservations about purchasing this product due to the negative reviews, but after having the unit installed in a 1987 American Standard for a few months I think I can safely say that if you are careful about following the instructions (and they are a little complex), you'll be happy with this purchase. $30 beats $250 for a new dual flush toilet, and you keep a hundred pounds of ceramic out of a landfill.I do have some advice to give to future purchasers of this device:First, read the instructions through once before you install the device. It's good policy for any installation, but these instructions really are at what I'd call the high end of a layman's capability. What's more, you really can't count on the manufacturer's support -- I made two calls on two separate days, during business hours, and was shunted to voicemail both times. I never received a call back. Fortunately I was able to resolve my problem myself (see "Third," below).Second, everything about setting this unit up requires /firm/ pressure, and nearly every part that moves in this device locks into or out of place with a loud snapping sound. You're going to think you've broken something at least once during installation and calibration. Don't let it scare you. Be careful, but don't be too gentle.Third, when you install the dual-flush converter, it comes with the blue float (which sets the quantity of water to use in a light flush) set to the highest point (the smallest possible amount of water). As part of the calibration process, the instructions will tell you to test light-flush the toilet, moving the blue float downward each time until the bowl drains completely.What I discovered was that repeatedly light-flushing the toilet will cause a false positive result (a light flush will succeed when the blue float is still set too high), and then you won't get successful light flushes later, which can be frustrating (and gross). I found that test light-flushing the toilet gave me false successful light flushes only four clicks from the highest setting, but to get consistent successful flushing over a period of days, I needed to be about five clicks from the lowest setting. This is still a lot less water than is used for a full flush!What I recommend is this:1) Install and calibrate the device according to the instructions.2) Press firmly down on the blue float until it reaches its lowest point (the largest possible amount of water). This will make a loud ratcheting noise; again, don't worry, you haven't broken anything.3) Use the toilet normally for a day or two.4) Once you've determined that the toilet always light-flushes successfully at this setting, pull the blue float up three clicks.5) Repeat steps 2-4 until you start getting failed light flushes.6) Press the blue float down one click.7) Use the toilet normally for a day or two.8) If you start getting failed light flushes, repeat steps 6 and 7 until you don't.9) Rest easy knowing that your light flush is properly calibrated.Update: bought two more for the upstairs bathrooms!May 2014 Update: I've noticed that the supplied zip-tie securing the flush meter to the fill pipe has broken in all three of my installations, the last of which I performed only last year.I believe the rubber o-ring around the fill pipe is still keeping the gasket secure, so I don't think this is a major fault, but be advised that if you are performing a first-time installation you may want to replace the supplied zip-tie with a sturdier one you buy yourself.December 2014 Update: In the interest of full disclosure, because this review gets so much attention, one of my installations failed after about 26 months. My other two are still going strong, and I suspect it was not a defect in the device. We had one of these -- Kaboom with OxiClean Scrub Free! System-1 ct -- installed, and it appeared to be leaking highly concentrated cleaning solution into the tank. I think that what happened was the cleaning solution in the tank ate an internal seal in the flush valve, which is a thing that happens. You should never put cleaning solution of any kind in your toilet tank.The failure was slight, a very slow drip, but every time it dripped it made a loud pinging that resonated throughout the downstairs of the house. I could not correct it by manipulating the valve, so It had to go. Rather than install another one of these devices we decided 25 years was a good run and installed one of these: American Standard 2989.101.020 Concealed Trapway Cadet 3 Right Height Elongated Flowise 1.28 gpf Toilet with Seat, White.December 2017 update: My two remaining installations are still working perfectly, five and a half years later.

Have now had installed for 6 months in one case and 2 months in two others. Working just fine. One advantage to these systems is the white slide mechanism on the filler tube. You can slide that so that it will not refill after flushing. This is a big help if have to adjust the replacement for the flapper value but even bigger help when wanting to clean the toilet bowl. Can slide to stop flow, flush using the liquids flush button and then with the bowl nearly empty can clean the bowl thoroughly. Then release the slide and bowl refills normally. Big help vs turning the water off at the valve. Same is true if going on vacation or away for weekend and want to prevent possible toilet overflow as mentioned below. Features not mentioned in other reviews I have seen on the product but a big plus for it.This us update to earlier note. I have now installed three of these systems. The only issue I had was getting the flapper replacement installed so it did not leak. But once that problem was solved the system works great. One item I have not seen noted but important to me is that you can slide a white slide on the arm of the filler mechanism to lock it in place. Very useful if going on vacation or even away for weekend as it could prevent a toilet from overflowing as friends had happen a few years ago with major damage. Beats turning water off to the whole house as the major risk is from the toilets. System worth it just for this! Also when checking for leak you can mark level with pencil and lock the filler and then go back in a few hours and see if level has dropped. Likewise if you have to adjust the flapper replacement it is easy to do by locking the filler when water level is low and then twisting the large part off of the flapper replacement and adjusting to be sure no leak. After doing this can release to let water part way in and then lock again and mark so do not have to fill entire tank (or drain it). Thought these useful enough to pass along.I initially bought each of these separately so my review of the filler valve and the dual flush valve are under the individual parts except that I am only adding the comments above to the entire system link. I have replaced the innards of toilets numerous times over the years and found this system very easy to install. Only caution I would pass along is to read the directions and the warnings with some care before you attempt installation. I have for years used bleach tablets in the tanks and I note that they warn not to do this with their system. Each part of the installation has some simple instructions but important to read them to save yourself a lot of frustration. When I first installed the dual flush I did not follow instructions to put water over the seating valve and mark with pencil and let sit 15 minutes to be sure it was seated. As a result I had to go back and redo the installation. Once you have done an installation for one toilet doing others will be extremely easy. So far system is working very well but I plan to wait a couple of months before buying more and installing in my other toilets. If this works as well as I hope I will be using these from now on. Especially attractive to me is replacement of flapper valve and those of us with hard water tend to find build up of sediment and lime allows leaking of the flapper over time which can waste a great deal of water from a very slow leak that you may not realize is occurring. If I find problems with the units after installed a while I will come back and revise this review. As of now I can recommend this unit both for ease of installation and how well they are operating so far. Some of the problems I have seen in other reviews have yet to show up for me. If they do I will edit this review.

Installation was, 'Okay', and so far it's working as planned. One thing I'd suggest is, adjusting the height before you install it permanently in the tank and install the plastic tubes to the fittings. I followed the directions and it feels like I'm going to snap the valve assembly by twisting the upper part that, '1/4 turn' to raise it up, and fitting the tube at the bottom is hard for big hands like mine. Put it in place, measure the distance to the other side of the tank and cut the tubing to fit and press it on; raise the float assembly, THEN install the whole thing with the plastic nut. Final adjustments can be made later.