Product Description
The HydroStop replaces flimsy rubber flappers with a sturdy tower, it is engineered to eliminate the most common toilet problems. Unlike the angled, floating close of a flapper, the HydroStop drops vertically and solidly onto the flush valve opening to create a better seal and eliminate the possibility of leaks. The EPA estimates that 20% of all toilets leak up to 200 gallons of water a day, mostly because of faulty flappers. While ordinary flappers are connected to the handle with a thin chain that is subject to improper tension tangles and breakage, the HydroStop features a durable stainless steel cable that is stronger, lasts longer and is less likely to break. The HydroStop also features patented S.T.O.P. Technology (Safe Toilet Overflow Protection) that helps prevent bowl overflows. In the event of a clog, lifting up on the handle immediately drops the HydroStop tower and closes the flush valve so that water does not continue to drain from the tank into the bowl.
- ELIMINATES LEAKY TOILET FLAPPER: Engineered to eliminate the most common toilet problem of a leaky flapper by it’s robust design
- COMPATIBILITY: Easily adjust to work with newer and older toilets. Fits most front, side, and angle mount toilets with standard 2″ to 2-1/2″ flush valves. Does not fit Mansfield toilets.
- STOPS OVERFLOWS: Toilet handle activates spring loaded S.T.O.P. Technology to immediately prevent overflows
- NO-TOOL INSTALLATION: Drop-in installation requires no tools or tank removal needed
- DURABLE MATERIAL: Permafit silicone seal is chemical resistant (avoids warping) and a steel cable stronger than a normal flapper chain
Warren Gill –
Works great! Until the handle breaks. Unable to find replacement handles. Good design ruined by poor construction
Danco (store manager) –
Good Morning Warren,
Thank you for your feedback and letting us know of the situation you had. We will pass it along to our engineering team so that they can look at the problem. If you have anymore question or concerns about the FLT231 we have an excellent technical sup...Read More
Brad Steimle –
Easy installation and the product works well, but the handle is of cheap design (plastic) and will break within the year. I have replaced both toilets with this product and I have replaced both handles within a year. The price of the whole product is so cheap that you will end...Read More
Danco (store manager) –
Good Morning Brad,
Unfortunately, we do not sell a single handle replacement (we once did at retail). I will pass on your concern to our Engineering Team so that they can be aware of the issue you experienced and push for a replacement handle to get back on the shelves. ...Read More
Jim Schmitt –
Have had your product in one toilet for several years. It recently started leaking. Found I could not buy a gasket had to buy a whole new installation. We have lots of chemicals in our water so suspect that caused the seal to fail. I see on the new set box that the silicon...Read More
Marc Jacob –
Easy to install. Works great, I have installed in both bathrooms. I have also had the handle break twice and cannot find the handle by itself.
Danco (store manager) –
Good Morning Marc,
Thank you for letting us know about the experience you have had with the FLT231T. We apologize for the inconvenience you have experienced regarding the handles on the HydroStop Toilet Tank Flapperless Alternative. We have recently made improvements to ...Read More
Gavin Percy Langley –
Works very well, easy to install, just a pair of pliers needed. I have 2 so far in my house and going to do one more,every thing works smooth and a FULL flush without having to stand and hold the handle down, one push does the job.
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Bernard Burns –
I’m very satisfied with this product .
Used it for many years .
Only problem is the handle. This is the 3rd handle that broke and no replacement part available .
I ended up buying whole new sets just for the handle .
Now I have 2 unused flus...Read More
Danco (store manager) –
Good Afternoon Bernard,
Unfortunately, we do not sell a single handle replacement (we once did at retail). I will pass on your concern to our Engineering Team so that they can be aware of the issue you experienced and push for a replacement handle to get back on the shel...Read More
Norman –
It doesn’t fit TOTO one Piece toilets
Danco (store manager) –
Good Afternoon Norman,
Most TOTO toilets have 3″ flush valves, which are larger than the standard 2″ to 2-1/2″ flush valves that the FLT231 fits. There are always exceptions when it comes to universal products and unfortunately your toilet just happens to be one of...Read More
Tom Yost –
System works great, just wish you could order just the gasket and not the entire Flapperless Flush System. I am stockpiling a bunch of spare parts.
Danco (store manager) –
Good Morning Tom,
Thank you for your feedback. We are happy to hear about your satisfaction with the FLT231. We understand your frustration regarding needing one part this available as a stand alone and therefore having to buy the product all over again. We will share yo...Read More
Dennis Newkirk –
I’m rating the customer service and the engineering upgrades. The fact that Danco has recognized and addressed the undersized stem issue of the handle on the HydroStop FLT231 system is top notch as compared to most companies these days. The handle stem was the weak l...Read More
Steven –
I replaced all of the valves on all 3 toilets in the house. They worked flawlessly until about the 8 month mark when all of the handles started breaking. I have had to replace all three and had to purchase the entire kit just to get the handle. Contacted customer service who s...Read More
Danco (store manager) –
Good Afternoon Steven,
We are sorry to hear about this experience you had. I have passed along your concern to our Senior Product Support Member and they should be in contact with you soon. We would be happy to send you replacement handles. We understand your reluctance ...Read More
Rich Celestino –
After I installed this product, I noticed a leak indicating that the gasket was not sealing properly. I have uninstalled and reinstalled the FLT231 several times, paying careful attention to the instructions, but I am still unable to get a secure fit. I decided to reinstall my...Read More
Danco (store manager) –
Good Afternoon Rich,
I am sorry to hear about the inconvenience you are having regarding the FLT231. An unsuccessful DIY installation can be frustrating. Our excellent Product Support team is just a phone call away and they would love to provide some troubleshooting tips...Read More
Rob –
I feel basically the same as other reviewers. Handles breaking has been main issue. Where and when is this going to be resolved?
Danco (store manager) –
Good Afternoon Rob,
The issue was resolved about a year ago. We’ve reinforced both the shaft inside the handle and the tip of the handle that goes into the control box. Unfortunately, there are still some of the older models out there. We would be happy to send out...Read More
Gary –
Very easy to install and really works great. I have them installed in two bathrooms and would like to install in additional ones. However, I also have had problems with the handle breaking. I had one break last month and was forced to purchase a whole new Hydrostop kit. Now, j...Read More
Danco (store manager) –
Good Morning Gary,
The issue was resolved about a year ago. We’ve reinforced both the shaft inside the handle and the tip of the handle that goes into the control box. Unfortunately, there are still some of the older models out there. We would be happy to send out a re...Read More
Art Scola –
Worked great for 2.5 years, then the handle broke. Installed 9/2014. I would think this would be covered under the five year warranty.
Danco (store manager) –
Good Morning Art,
Yes, this is covered under the warranty. Please contact our Technical Support team and they can assist you. They can be reached at 800-523-5135 (option 2) or [email protected]. We are happy to help in any way we ca...Read More
Norman –
love this valve. I have had problems with the plastic wire tie breaking, but that was an easy fix. I just replaced it with a stronger tie and no problem since. Untill now, when the handle broke. I notice that I am not the only one with this problem but see that the company h...Read More
Karen Harmon –
I too installed the HydroStop in 4 toilets in 11/2014-12/2014. Last night the 4th handle broke. The product works great as far as stopping leaking (the only reason I gave it 3 stars instead of 1) but the flawed design on the handle is frustrating and costly. Why can’t...Read More
Danco (store manager) –
Good Morning Karen,
Thank you for reaching out to us. We have recently done a redesign on the handles and the shaft is now solid. Hopefully, this new redesign will help in the future. Please reach out to our team of Technical Support agents to let them know about your is...Read More
Brian –
I installed it and it was leaking worse than the flapper I was trying to replace. Returning it tomorrow.
Danco (store manager) –
Good Morning Brian,
Thank you for your feedback. Products can fail for a variety of reasons and that is why we offer a warranty. We are sorry for the inconvenience this has caused as this is not typical of the FLT231. If you could reach out to our Product Support team we...Read More
MIlton –
It Worked…. perfectly : MOM was happy ..
Citizen –
Seriously you have had multiple cusotmers complain about the handle breaking. This is the weakest link in the product design and any engineer would know this is subject o pressure and will break. Using cheap chinese manufacturing parts is the problem, you need to sell the hand...Read More
Scott –
Bought these replacements for the other two toilets parts, by the same company, that had started leaking. These were supposed to be simply “drop in” and off they go. Well the black bottom seal leaked IMMEDIATELY. I would very much NOT recommend these parts.
Chris –
Stay away! Handle broke right away. Bought another, handle broke a few months later. The other parts seem to work well, but the handle makes it more trouble than it’s worth.
Danco (store manager) –
Good Morning Chris,
We have recently made an update to the design to better the handle on the FLT231. Unfortunetly, you have may have bought old inventory. If you reach out to our Technical Support team we will be happy to send you out the newly designed FLT231 or replac...Read More
Elizabeth Shelby –
Bitterly Disappointed
I am so disappointed in this product. I am a senior and bought this product hoping it would stop my toilet leaking, and instead of buying the usual rubber ones which don’t seem to last very long, it hasn’t.
I looked online at various tut...Read More
Charles –
Question: I have installed this HydroStop a year or so back and it works great but what is that blue gauge on the side of the unit that slides up and down???
Danco (store manager) –
Good Morning Charles,
Thank you for reaching out to us. The blue adjustable slider controls the amount of water that is used per flush. The higher the slider is raised it reduces the amount of water used and the lower the slider is increases the amount of the water used...Read More
Kim –
Purchased June 2014.
Still working well.
Danny –
The directions are not clear on the proper orientation of the control box. I attached it the first time and the toilet would not flush. I decided to flip the control box and install the toilet handle through the opposite end of the hole, and it then flushed.
Danco (store manager) –
Good Morning Danny,
Thank you for reaching out to us. We have passed on your concern to our product management and creative team to further review our installation instructions. We apologize for the inconvenience that this has caused during your install.
Tom –
Great idea, if only it worked. Does not last longer than a traditional flapper, so why bother? After a year (warranty period, conveniently) the toilet started running frequently–the same symptom as the flappers I bought this to replace. It’s too much of a pain and...Read More
Danco (store manager) –
Good Morning Tom,
We offer a limited lifetime warranty for the FLT231T. Please contact our Product Support Team at 1-800-523-5135, option 2 and we will be happy to assist you. We will provide you with the latest model that includes the most recent design to the handle. W...Read More
Valued Customer –
These things are bad-a$$. Installed the first one in 20 minutes, the other one in 10. Helpful hint: Read the instructions all the way through once before you start the job, and you’ll save time. I only wish they made a version that fit 3″ valves on my Glacier Ba...Read More
Vinod Banginwar –
This must be my 4th Danco Hydrostop toilet tank flapper alternative repair kit. The knob is the weakest link. It breaks in 2-3 months. I wish Danco should sell only replacement knobs so I can buy in bulk. Rest of the assembly is good but just because of knob I had to use only...Read More
Mr. Eric Callarman –
Installed easily, BUT the blue water amount slide selector does not seem to change the amount of water used. My toilet double flushes and I cannot adjust it to close the flapper quicker. I have a 1.6 gpf toilet.
Sharon Burck –
I installed the Hydrostop on all 4 of my household toilets several years ago. They have worked perfectly for the most part – all leaks stopped. Today I had to replace the fill valve and ended up breaking the handle. I had to buy a whole new Hydrostop kit just to repla...Read More
John R –
I installed the FLT231 HydroStop today and am happy with the purchase. However, what could have been an easy 5 minute job ended up taking close to an hour – because the toilet I was working with happens to have a larger gap between the overflow tube and the flush valve, ...Read More
Robert Moss –
I’ve used on 4 toilets for many years and only yesterday had to replace one due to leakage with age. Seems OK with me. Eliminates “kinked chains” which was my motivation. Did have 1 broken handle which is mentioned frequently. Call the company, they will ...Read More
Eric Marinoff –
Old fillervalve assembly with brass rod and black “balloon”. Toilet was “trickling”. Replaced with new filler valve (Korky) and flapper. Still trickled, only worse. Got new flapper valve seat…still trickled. Got a repair for flapper seat-still trickled. So ...Read More
Eric Louie –
Purchased from Home Depot & installed today taking 2 minutes to read instructions and 5 minutes to install. Appears to instantly stop the very slow seepage of water that drive us all crazy. Looking forward to a new non leaking experience.
Howard Muramoto –
It doesn’t last as promised nor described….I’m sorry to state.
The blue silicone gasket [aka flapper] at the end of the vertical plunger is already malformed.
I chose and installed the HydroStop [purchased at True Value] to eliminate constant flap...Read More
Gustavo –
I have purchased this system from Home Depot and Amazon ,
System is good but Handle breaks after 3 – 4 months
As mentioned in other comments , is not worth it if you have to purchase the entire system again just to get the handle
If the handle is that ...Read More
Ed Fasvender –
I had replaced leaky flapper and annoying chain the with Danco flush and fill valves. Very easy install and I was very happy for several years. Handle just broke and Home Depot offered no solution except to buy entire FLT231, so I did. Took out the old one and except for tin...Read More
Phil Rutledge –
Worked great for several years until it started leeking. I cannot find a replacement blue silocone seal ring. Searching this site does not give one either. I am down to relacing it with another product.
Phil Rutledge –
Worked great for several years until it started leaking water into the tank. I cannot find a replacement blue silocone ring, not even on this site. I guess I will replace it with another product.
Matt K –
Cheap plastic handle breaks yearly like clockwork. My third handle just broke so I came here hoping to find a replacement. Just like last year, and the year before that, I found there are no replacement parts offered – you have to buy the whole kit. This cheap plastic is...Read More
Danco (store manager) –
Hi Matt!
The FLT231 was been redesigned with a new handle design and should not be causing it to break. If you can reach out to our Technical Support team that will be able to help you get the most up to date version. They can be reached Monday – Friday between 7:0...Read More
Paul B –
The toilet I was working on was an ancient American Standard toilet with different style flapper assembly than I’ve ever seen. Apparently a very common design at one time, with flat – instead of angled – flapper seat. I decided to replace the fill tube/flappe...Read More
I see that folks have had trouble with the flush handles on these; as I just purchased this Hydrostop, I’m hoping I have the improved model, but it’s good to know from what I read here that Danco is standing by their goods and replacing the broken handles.
John Cline –
I bought the FLT231 in April of 2021 and six months later, I noticed it wasn’t sealing and was losing a tankful of water about every three minutes. I removed it today and saw that the blue silicone seal had developed a blister which was preventing it from sealing. The bl...Read More
Clint –
0 (zero) is to high of a rating for this Product and Company support. First one started with 55 yo Grandpa DYI that reads the instructions. On this you need not “push” to hard on the handle, or try to “over-rotate” it as it is a short stroke mechanism...Read More
as other have said this piece doesn’t last long, and there are no replacement parts available. So “call the Engineering Team” to get a redesigned product. So it’s Dime-A-Dozen marketing forcing us to buy a new one! Now, I have owned two, both valves are perfect without handles. We’ve been using the 2nd one 3 years now with a stubby screw driver and an exposed cable.
I am done with Danco.
Anthony Jarvis –
I have 156 toilets with the FLT231 Hydrostop device. Unlike other reviewers, I have had no problems with the handles. But I see many problems.
The tie raps that hold the unit in place last between 1 and 2 years. They loose their tension or break, causing failure. Aft...Read More