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HydroClean Water-Saving Toilet Fill Valve with Cleaning Tube
The HC660 HydroClean® Toilet Fill Valve solves the two biggest reasons for water loss in toilets; miscalibration and leaks. It easily calibrates to adjust the exact amount of water needed in the tank, refills quickly and jets clean the tank. A unique feature is the leak detection and signals when a leak is found. It is designed to fit most standard toilets and the height can be adjusted from 11 in. to 13.8 in. The HC660 installs easily without tools.
The HC660 HydroClean® Toilet Fill Valve solves the two biggest reasons for water loss in toilets; miscalibration and leaks. It easily calibrates to adjust the exact amount of water needed in the tank, refills quickly and jets clean the tank. A unique feature is the leak detection and signals when a leak is found. It is designed to fit most standard toilets and the height can be adjusted from 11 in. to 13.8 in. The HC660 installs easily without tools.
WATER-SAVING toilet fill valve with built-in mini-valve that adjusts tank refill water level
DETECTS LEAKS: The water-saving toilet fill valve sounds an audible alert when a leak is detected making you aware of any potential issues that must be addressed
CLEANING JETS: Strong jets stir up debris in toilet tank in order rush any dirt down the drain with every flush keeping your toilet tank cleaner
EASY ADJUSTMENTS: Shuts off water inside tank making repairs a snap, refills quickly, and has an adjustable height of 11 inches to 13.8 inches
EASY INSTALLATION: Smart Nut helps with easy installation without tools in most standard toilets
Specifications
PKG Height (in.)12.60
PKG Width (in.)3.15
PKG Length (in.)3.19
PKG Weight (in.)0.38
Product Height(in).10.50
Product Width(in).3.00
OEM BrandUniversal
MaterialPlastic
Product TypeFill Valve
39 reviews for HydroClean Water-Saving Toilet Fill Valve with Cleaning Tube
Rated 2 out of 5
John wright –
Claims it has an “audible” alert.
Nothing in instructions as to how the leak detection works.
How does an audible alert work with no battery or sounder?
Unit is constantly refilling tank, even when it has not been flushed!
Danco (store manager)–
Good Morning John,
Thank you for choosing Danco products. This fill valve is designed to be a bit nosier when doing a short fill, such as what you are experiencing. This is how it alerts you to the fact that you have a leak. We will let our Marketing Team know that there...Read More isn’t any information in the installation instructions to help with understanding how “audible alert” work so that they can make updates. If you need more information about how the HC660 works we have an excellent technical support team that is willing to answer any questions you may have. They can be reached Monday – Friday between 7:00 AM and 5:00 PM (CST) at 1.800.523.5135 (option 2), or if you prefer, you can email them at [email protected].
The nut on the bottom has two tabs sticking out so i could not turn it because they hit the toilet so i cut them almost completely off. Them i could not tighten it enough with my fingers for it to click but it is round so i could not put a wrench on it. I finally got it to cli...Read Moreck using plyers. There should be a tool for tightening this. When i turned on the water it was leaking because the nozle at the bottom was hitting the insulation in the tank so i had to cut the insulation and tighten it some more.
The elbow on the fill tube is very hard to reposition and the fill tube interferes with the flapper. I had to use zip ties to hold it away from the flaper valve. Also the water coming out the fil hose was shutting the flapper and i was not getting a full flush.
I finally got it working but the job took a lot longer than it should have.
It works and it will save water by not over filling the bowl.
Good Morning Stanley,
Thank you for taking the time to let us know about your situation. We know it can be frustrating when a product does not perform as you intended. However, we do have a solution for the foam insulated tank! The HC550 Fill valve would provide the best...Read More fit with the least amount of modification. We hope this can help you with your installation and fix your problem. If you have anymore questions or need some troubleshooting tips please reach out to our excellent Product Support team. They can be reached at 800-523-5135 (option 2) or if you prefer you can email them at [email protected]. Thank you again for letting us know of the issue you have experienced.
Garbage, only a few months old and now it runs non stop here and there no rhyme or reason as to why. Don’t buy, just replace what you have with factory stuff that’s what I’m doing next
Danco (store manager)–
Good Morning Mike,
Thank you for reaching out to us to let us know about your situation. We know it can be frustrating when a product does not perform as intended. I will send over your review to our Engineering team so that they can take a look at the issue. Danco striv...Read Morees to provide the highest quality and most innovative products for the best value. However, products can sometimes fail prematurely for a variety of reasons and therefore we provide a warranty to help resolve those issues. Please contact our Product Support Team @ 800-523-5135, option 2 or if you prefer you can email them at [email protected]. We appreciate your feedback and with feedback such as yours we are able to better our information to help the consumer understand our products more. We appreciate your feedback and with feedback such as yours we are able to better our products for future use.
I’m actually a fan of these fill valves. I don’t need the tank cleaning feature, but I love the ability to adjust the bowl fill rate. You can save a good amount of water by not overfilling your bowl. We are actually seeing the difference in our water bills.
Rated 2 out of 5
Denis Philippot –
I bought this fill valve about a year ago. It was easy to adjust and install, no complaints there. Yesterday the demand flow stopped after a flush. After a cursory examination and intermittent operation, I decided I needed to more closely inspect the valve assembly. It was sim...Read Moreple enough to take it apart but I could not get it to operate during testing. It seems to me it should not have failed after only one year of operation. Although this apparatus is not expensive, I should have had at least five years of use. It has been replaced with your competition’s product and I’m sure you don’t care, as is the case with most corporations.
Good Morning Denis,
Thank you for letting us know about your DIY experience. We know it can be frustrating when a product does not perform as intended. We would love to make this right. If you would contact our Product Support team at 800-523-5135 (option 2), or if you p...Read Morerefer you can email them at [email protected], we would be happy to send you a replacement. I have sent over the issue to our Engineering team and our Product Managers so that they can look into the problem to see what might have caused the issue. We apologize for the inconvenience you have experienced.
Junk. Absolute junk. I have. To replace these every three months. On my third one for the same toilet. Luckily they still look new, so I buy another one, dry the 3 month old ones off, and take them back. Not going to waste my time with this brand anymore, however. They clog or...Read More wear out very fast.
Good Afternoon Gary,
Thank you for letting us know of the situation you have encountered. We apologize for the inconvenience you have experienced. We do offer warranty replacement for the HC660 Fill Valve. If you could reach out to our Product Support team at 800-523-513...Read More5 (option 2) we would be happy to send a replacement and discuss any resolutions to fixing your problem.
By the way, if you rate this low, this website still displays it as 5 stars. Crap product.
Danco (store manager)–
Good Evening Regina,
Thank you for your feedback. We are concerned that you have had a negative experience with the HC660. We know it is frustrating when a product does not perform at a high level and does not meet your expectations. We value your feedback and would welc...Read Moreome additional information on how the product did not perform to your needs. We do publish all reviews whether low or high, but we are more concerned on making your situation right. Please contact us at 800-523-5135 (option 2), or if you prefer you can email us at [email protected], so that we can either trouble shoot your issues or that we can take care of your product under warranty.
annoyed…I wish I did not switch this over from the old ball and chain. I am on my third switch in the last three years and these are not cheap. Every now and then I hear water running for about 10 and I am not in the mood to attempt another problem solve. I have rerea...Read Mored the installation instructions to problem solve the water leak to no avail. Another $20 down the drain. Back to the old ball and chain since this thing is not saving me water but giving me a head ache. i tell my kids with water running every now and then may prevent the pipes from freezing. lol All of us who are not happy with this item should get a replacement free of charge to make up for installation time and wasted water. My kids think I should purchase a new toilet but there is nothing wrong with this one except for using this item thinking I would be saving water.
Good Morning Loretta,
We know it can be frustrating when a product does not perform as intended. Unfortunetly, products can fail for a number of reasons. We do, however, offer a warranty replacement for the HC660 Fill Valve. If you could reach out to our Product Support ...Read Moreteam at 800-523-5135 (option 2) we would be happy to send a replacement. We apologize for the inconvenience that this has caused you.
Have had my Hydro Clean system installed for several years with no problem. Recently our well ran dry. The new well water is still running dirty which I think, caused the fill valve not to fully close stopping the water flow. I don’t really want to replace right away ...Read Moreuntil the well settles down. Is there a way of cleaning the valve gaskets during the well problem?
Good Afternoon Larry,
From what you have described it seems as if there might be debris in the fill valve keeping it from sealing (no matter how much you clean debris can find its way somewhere and cause issues unfortunately). See below for some steps on correcting this....Read More
1. Turn off the water at the wall.
2. Remove the cap from the top of the fill valve by pulling straight up. The cap will be difficult to pull the first time, but will come off.
3. Remove the white piston assembly by lifting the float arm and rotating counter-clockwise until it unlocks, then lift it out.
4. Cup your hand over the exposed part of the valve and slowly turn the water on going to the toilet.
5. Let the water run for about 15-20 seconds, flushing any debris out.
6. Turn the water back off.
7. There’s a round black rubber seal underneath the piston assembly that the float arm attaches to. Please remove that seal and run it under water, looking for any tears or punctures. Make sure to run water through the center of it. Do the same with the piston assembly, moving the arm up and down to allow water through.
8. If there is no damage to the gasket, lubricate the seal with silicone grease, replace the black rubber seal and piston assembly, and put the top blue cap back on to the valve
9. Test.
If by chance this doesn’t resolve the issue. Please call or email our Technical Support team and give them your shipping address and we will happily send a replacement under warranty. They can be reached at 800-523-5135 (option 2), or if you prefer you can email them at [email protected]. I really do hope these tips help!
Brutal. I’ve installed dozens of fluidmasters or old style toilet parts with so much less hassle. And right out of the box it wouldn’t shut off. Would give it zero stars if I could.
Danco (store manager)–
Good Morning Geoff,
Thank you for choosing Danco products. We apologize for the inconvenience you have experienced. Sometimes when installing new parts, mineral buildup in the system breaks loose and can clog the diaphragm in the unit, not allowing it to close properly. ...Read MoreTo address this, try the following:
1. Turn off the water at the wall.
2. Remove the cap from the top of the fill valve by pulling straight up. The cap will be difficult to pull the first time, but will come off.
3. Remove the white piston assembly by lifting the float arm and rotating counter-clockwise until it unlocks, then lift it out.
4. Cup your hand over the exposed part of the valve and slowly turn the water on going to the toilet.
5. Let the water run for about 15-20 seconds, flushing any debris out.
6. Turn the water back off.
7. There’s a round black rubber seal underneath the piston assembly that the float arm attaches to. Please remove that seal and run it under water, looking for any tears or punctures. Make sure to run water through the center of it. Do the same with the piston assembly, moving the arm up and down to allow water through.
8. If there is no damage to the gasket, lubricate the seal with silicone grease, replace the black rubber seal and piston assembly, and put the top blue cap back on to the valve
9. Test.
If that doesn’t resolve the issue, please contact our Product Support department at 800-523-5135 (option 2) or [email protected].
I’m just a home owner, not a plumber. My tank was not filling, so I went to a big box store and your product was prominently displayed in its own P.O.P stand. So I bought it. It took 15 minutes from removal of the malfunctioning old one, to installing the HydroClean®. ...Read MoreWorked perfect problem solved, simple and effective adjustments. All of that is well designed and saved me from a plumber call. — I have only one concern. I don’t think the blue “self-cleaning” tube apparatus is a Value Add. I think its the opposite. With its small outlet hole and then a tube to carry the water it seems like it will be much more prone to clogging than the traditions water outlet valve normally at the bottom of the base. I suggest to revert back to the tried and true. For now working great. Cheers.
HOrrible to install I can’t get the smart nut to go under my water pipe. Now I have np toilet for the weekend because customer service isn’t available. I would go with a different brand.
Rated 5 out of 5
Susan W. –
I installed this product in my 4 toilets over 9 years ago. They were easier to install than it was to remove the original toilet valves. I have not had any issues with any of them until Just recently, which is pretty darn good considering how long I’ve had them.
Rated 3 out of 5
Marc Bale –
HC 660 leaking out the top, not fillibg through the fill valve. Bowl eventually fills but very slowly. Whay do I do? Thx and please don’t publish. I have been happy with the product unyil now.
Danco (store manager)–
Good Afternoon Marc,
Thank you for your inquiry. We apologize for the inconvenience you have experienced. It seems as if there might be debris in the fill valve keeping it from sealing. The round black rubber seal underneath the piston assembly that the float arm attach...Read Morees to needs to be checked for tears or punctures as well. Please feel free to reach out to us if you have any additional questions and concerns. Our Technical Support team can be reached at 800-523-5135 (option 2), or if you prefer you can email them at [email protected].
Easy to install. However I’ve installed two today and the both will. Not. Stop. Flushing. Every 3-5 minutes they flush. It’s really annoying and I can’t figure out any way to get help besides this. I tried calling DanCo but the offices are closed.
Danco (store manager)–
Good Afternoon,
Thank you for reaching out to us and letting us know of the experience that you had. We apologize for the inconvenience you have experienced this past weekend. The noise that you hear with the HydroClean is the toilet fill valve filling up the tank to th...Read Moree specified water level. The unit was designed to assist with water saving. So it to was designed to make an audible alert sound (filling the tank level) to alert you when you are losing water from the tank. The problem doesn’t seem to be the fill valve per se. The problem is most likely the flapper, and unfortunately the issue is most likely you are losing water from the flapper that is leaking water from the toilet tank to the toilet bowl. Test by shutting off water while tank is full. Take a pencil and mark the water level in the tank as well as in the toilet bowl. Do not flush use or turn the water supply back on for 30 minutes. Check water level. If water level drops, a replacement flapper may be necessary. We apologize that we can not be reached over the weekend. Our Customer Support team can be reached Monday – Friday between 7:00 am and 5:00 pm (CST) at 1.800.523.5135 (option 2), or if you prefer, you can email them at [email protected].
I like these valves and installed two in my home within a couple of weeks of each other. The problem is that one of them twists when flushed, and the float catches and does not float to cut off the water flow. Any ideas on how to eliminate the twisting motion will be appreci...Read Moreated!
Good Morning Dale,
Thank you for reaching out to us. There could be a multitude of things causing the issue. It could be the positive lock (height adjustment is not locked in place) or the smart nut is not tightened down enough that is making the unit twist when being fl...Read Moreushed. To get a better understanding of the situation we would need to obtain more information. If you could please call our Product Support Team at 800-523-5135 (option #2) during our business hours (Monday – Friday 8 am – 5 pm CST) so we can better assist you to with the issue you are having, it would be greatly appreciated. Thank you in advance.
Is it that hard to design a simple toilet fill valve that works? As I read here, about three customers are kind of satisfied and the rest just want their money back.
Rated 4 out of 5
John Thomopoulos –
Installed “Hydroclean” water valve, water running, not in the toilet, tank won’t fill.
Danco (store manager)–
Good Morning John,
Thank you for your inquiry. We apologize for the inconvenience you have experienced. It seems as if there might be debris in your Hydro Clean fill valve keeping it from sealing. To correct this, please try the following:
1.Turn off the water at ...Read Morethe wall.
2.Remove the cap from the top of the fill valve by pulling straight up. The cap will be difficult to pull the first time, but will come off, to reveal the control arm mechanism and assembly
3.Remove the blue bolt at the end of the control arm that is attached to the blue float device by snapping it from the control arm (there is a slot in the back side of the control arm to be able to do so)
4.Remove the white piston assembly by lifting the control arm and rotating counter-clockwise until it unlocks, then lift it out.
5.Turn the water on going to the toilet (shut off valve) slowly. Let the water run for about 15-20 seconds, increasing the water pressure as you go, flushing any debris that could be at the bottom of the cylinder.
6.Reduce the water flow/pressure and then cup your hand over the exposed/top of the valve paying special attention to the water outlet nipples at the top and bottom of the fill valve cylinder to flush out any debris from the ports that could be there for about 15-20 seconds while increasing the water pressure.
7.Turn the water back off.
8.There’s a round black rubber seal underneath the piston assembly that the float arm attaches to. Please remove that seal and run it under water, looking for any tears or punctures. Make sure to run water through the center of it. Do the same with the piston assembly, with the pin metal pin facing up towards the water, moving the arm up and down to allow water through.
9.If there is no damage to the gasket, lubricate the seal with silicone grease (PLEASE DO NOT USE A PETROLEUM BASED PRODUCT), replace the black rubber seal and piston assembly, and put the top blue cap back on to the valve
10.Reattach the piston assembly into the valve cylinder
11.Reattach the blue bolt to the control arm.
12.Replace the blue cap on top of the valve cylinder.
13.Turn the water supply back on.
14.Test. Flush and test again,
This should fix the problem that you are occurring. If you have any more questions or concerns please feel free to contact us.
Terrible. I purchased this fill valve four months ago. Today the water only started coming out the top instead of the bottom so it filled very slowly. I discovered this is common problem and followed the instructions from a different review to disassemble the arm and clean o...Read Moreut the rubber gasket only to find the gasket has a big gash in it. Seems like a faulty design to me. I contacted support to hopefully exercise the ‘limited lifetime warranty’. If I had to do it all over again I would go with a different product.
After 3 months it’s making the “audible leak” sound. Nothing in the instructions about what to when you hear it…… nothing…..can see water leaking into the bowl.
What a piece of crap. Going to Home Depot and get the old reliable system. I’m th...Read Moreen going to remove this junk and drive over it several times with my 4×4.
Thumb screw can be 1.5″ longer. My toilet water overflow tube is 5.5″, this toilet fill valve fits for 6.5″ overflow tube or longer. To compensate, I loosen the thumb screw to the very top of the float but very weak holding. I wish they can make the thumb sc...Read Morerew longer. Please let me know when they fix this. Thanks.
Needed to replace the fill valve in my rental (because landlord never does anything) and saw this when choosing. Installation wasn’t too hard, though it wasn’t clear whether there was supposed to be the cleaning hose and mini valve hose in the box, or just the for...Read Moremer… Some reviewers seemed to have trouble with the height adjustment, but I played with the thing gently right out of the box to test the valve’s physical limits–so once I had it in position in the tank it was easy enough for me to adjust.
The instructions were vague in some points but I *think* (hope) I got it right. *Definitely* had to tweak it a bunch in order to find the combination of height, direction, hose length, and valve openness that I wanted. But so far it’s working. Upon flushing, water fills the bowl (though lingers a bit even though mini valve is almost totally closed). Water stops filling the tank at the physical volume I want, and so far there’s no leaks or other issues.
If in three months, or a year, or some too-short amount of time passes and the valve stops working properly, I’ll be back to record the problem.
Total junk. Failed within three months. Do not buy.
Rated 2 out of 5
DP –
Too bad failed in 2 years. only couple of years old and now it runs non stop here and there no reason as to why. Just replaced with another brand now.
Rated 3 out of 5
Tim12 –
I would like Danco to extend the thumbscrew one more inch longer for shorter overflow tube so I can depress the float down a bit further. It wouldn’t cost much more but can give us more option.
Danco (store manager)–
Good Morning Tim,
We have passed on your note to our Engineering team for further review. Thank you for your input. We take our customers concerns and suggestions seriously so we can provide the best experience possible.
Rated 1 out of 5
Michael –
I don’t know if I even want to start to install this item. They claim to have a how-to video (which they don’t) and by the customer feedback, I think I’ll save myself the grief and not even attempt the installation and just return the unit.
Rated 4 out of 5
Steve Hosier –
I just wanted to know when you lubricate the seal you put the silicon grease all over the seal or only specific areas. I took out the debris and rinse the the white cover and pin. When i put it together again, the folw of water did not stop. I figure it may be because i did no...Read Moret use the silicon grease. Please advise
I purchase a new hydroclean ez fill valve and it runned great. Next day it would not stop running water. I followed to instructions to clean it out and there was a small piece of plastic stuck below the white cover where the black seal was. I check the seal …no holes oth...Read Moreer than there the pin goes. I closed it up and it still does not stop the follow of water. Is there something else i need to do?
Hate the product. Says it needs no tools but now I can’t take the system off my tank because all the bolts just keep spinning and the valve itself spins when I turn the bolts outside the tank. My hands are raw from trying to unscrew it. I now have no toilet to use
Rated 4 out of 5
Mark Maguire –
Good design features. Reliable for about 8 years. Then a little repair was needed. I like the water flow adjustment feature for the overflow tube (it fills the bowl after each flush). This allowed water savings over the years. I also like the feature of the water jet across...Read More the bottom of the tank. It agitates the water and kept the bottom clean. Good ideas. It failed working the other day, after about 8 years. The water filling would not shut off. Fixed it with a replacement seal. There were online videos. So easy, about $3 repair. The part is called: Replacement Toilet Fill Valve Seal. Lastly, I was looking to buy another one of these, but did not find them on the shelves of Home Depot or Lowes.
It worked for about a week, then kept on running from the j tube filling up the tank until it goes in the overflow.
Danco (store manager)–
Good Morning!
Thank you for your inquiry. We apologize for the inconvenience you have experienced. It seems as if there might be debris in the fill valve keeping it from sealing. To correct this, please try the following:
1. Turn off the water at the wall. ...Read More2. Remove the cap from the top of the fill valve by pulling straight up. The cap will be difficult to pull the first time, but will come off.
3. Remove the white piston assembly by lifting the float arm and rotating counter-clockwise until it unlocks, then lift it out.
4. Cup your hand over the exposed part of the valve and slowly turn the water on going to the toilet.
5. Let the water run for about 15-20 seconds, flushing any debris out.
6. Turn the water back off.
7. There’s a round black rubber seal underneath the piston assembly that the float arm attaches to. Please remove that seal and run it under water, looking for any tears or punctures. Make sure to run water through the center of it. Do the same with the piston assembly, moving the arm up and down to allow water through.
8. If there is no damage to the gasket, replace the it and the piston assembly, and put the top blue cap back on to the valve
9. Test.
If that doesn’t resolve the issue, please reach out to our Product Support team who can further assist you. They can be reached at 1-800-523-5135 option #2 during our business hours (Monday – Friday 8 am – 5 pm CST) or if you prefer you can email them at [email protected].
Hi I bought this device for my toilet about 3 years ago. Recently after flushing it does not seem to refill my water tank any more. I have to close the water valve near the valve then re-open for the water to start filling the toilet tank again. However once it stops fill (...Read Moreor if i move the part that senses water full upwards) it wont re-fill the toilet tank after a flush. Can you advise what is the problem?
It’s not realistic because you have to flush few times each visit for the toilet or you end up with frequent toilet clog. I prefer one full tank of water and flush everything in one push.
Con: the float needs to redesign, it doesn’t always float up. Maybe a l...Read Moreonger body for more air pocket. I have to flick with my finger sometimes to make it float or it just sit down underwater.
Pro: Lifetime warranty and they were willing to send a replacement with no fuss.
I’m amazed at the exceptionally poor engineering of the valve diaphragm connection to the metal stainless connecting rod pin. It is held on by friction detent in the pin. In short, it relies on the tension of the rubber to attach to the pin. Brilliant idea. Rubber parts ...Read Moreshould only be in compression, and not relied upon in tension for plumbing applications. Depending upon the chemistry of your water, the rubber will eventually expand, get soft, or get hard loosening the pin to diaphragm connection. The result is your water won’t shut off, and the float will travel to its maximum position where the fulcrum arm is hitting the top of the valve. If yours does this, it’s toast – there is no fix. The rubber diaphragm has locked itself into the open position. Sometimes jiggling the fulcrum arm up and down repeatedly will move it back (temporarily).
I have encountered the same problem after installing a new Hydroclean 660 . The old one lasted about 5 years then quit, it would cycle on if I turned the Angle Valve on and off . I decided to replace it with the same type . Before I assembled it I ran water through the fill li...Read Morene just to be sure. After I put the new fill valve in place, I encountered the same problem. The water would not flow through the fill valve unless I turned the water on and off at the angle valve. I’ve takin the top off the new fill valve and ran water through it , cleaned the black rubber seal and lightly greased it with a non petroleum base lubricant. Still having the same issue.
I do like the lower cleaning feature this unit has and have the same model installed in the other bathroom. Not sure how to fix it without just trying another one ? Kinda confused
Hi Jon,
It sounds like the black seal in your unit is bad. If you could contact our Technical Support team at [email protected], we’ll be more than happy to send out a replacement seal.
Rated 5 out of 5
Jon Bianchi –
Just want to thank the support team, after reading my review. They were able help me with a new rubber seal. Everything is working like it should. Thanks again ,Quick response
Rated 5 out of 5
Carlos –
I have four of these valves in use for years. last year one failled, called costumer service and they sent me a replacement promptley, which is still working great,
Recently another one was overfilling with a delayed shut off. Called in and within a week I received four ...Read Morerubber seals one for each unit I have, it took me ten minutes to fix. It’s working like new. Thank you for the service you’re providing. I strongly recommend this product for water efficiency and the support provided.
California residents prop 65 warning This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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This website utilizes various technologies that are meant to make it as accessible as possible at all times. We utilize an accessibility interface that allows persons with specific
disabilities to adjust the website’s UI (user interface) and design it to their personal needs.
Additionally, the website utilizes an AI-based application that runs in the background and optimizes its accessibility level constantly. This application remediates the website’s HTML,
adapts Its functionality and behavior for screen-readers used by the blind users, and for keyboard functions used by individuals with motor impairments.
If you’ve found a malfunction or have ideas for improvement, we’ll be happy to hear from you. You can reach out to the website’s operators by using the following email
Screen-reader and keyboard navigation
Our website implements the ARIA attributes (Accessible Rich Internet Applications) technique, alongside various different behavioral changes, to ensure blind users visiting with
screen-readers are able to read, comprehend, and enjoy the website’s functions. As soon as a user with a screen-reader enters your site, they immediately receive
a prompt to enter the Screen-Reader Profile so they can browse and operate your site effectively. Here’s how our website covers some of the most important screen-reader requirements,
alongside console screenshots of code examples:
Screen-reader optimization: we run a background process that learns the website’s components from top to bottom, to ensure ongoing compliance even when updating the website.
In this process, we provide screen-readers with meaningful data using the ARIA set of attributes. For example, we provide accurate form labels;
descriptions for actionable icons (social media icons, search icons, cart icons, etc.); validation guidance for form inputs; element roles such as buttons, menus, modal dialogues (popups),
and others. Additionally, the background process scans all the website’s images and provides an accurate and meaningful image-object-recognition-based description as an ALT (alternate text) tag
for images that are not described. It will also extract texts that are embedded within the image, using an OCR (optical character recognition) technology.
To turn on screen-reader adjustments at any time, users need only to press the Alt+1 keyboard combination. Screen-reader users also get automatic announcements to turn the Screen-reader mode on
as soon as they enter the website.
These adjustments are compatible with all popular screen readers, including JAWS and NVDA.
Keyboard navigation optimization: The background process also adjusts the website’s HTML, and adds various behaviors using JavaScript code to make the website operable by the keyboard. This includes the ability to navigate the website using the Tab and Shift+Tab keys, operate dropdowns with the arrow keys, close them with Esc, trigger buttons and links using the Enter key, navigate between radio and checkbox elements using the arrow keys, and fill them in with the Spacebar or Enter key.Additionally, keyboard users will find quick-navigation and content-skip menus, available at any time by clicking Alt+1, or as the first elements of the site while navigating with the keyboard. The background process also handles triggered popups by moving the keyboard focus towards them as soon as they appear, and not allow the focus drift outside it.
Users can also use shortcuts such as “M” (menus), “H” (headings), “F” (forms), “B” (buttons), and “G” (graphics) to jump to specific elements.
Disability profiles supported in our website
Epilepsy Safe Mode: this profile enables people with epilepsy to use the website safely by eliminating the risk of seizures that result from flashing or blinking animations and risky color combinations.
Visually Impaired Mode: this mode adjusts the website for the convenience of users with visual impairments such as Degrading Eyesight, Tunnel Vision, Cataract, Glaucoma, and others.
Cognitive Disability Mode: this mode provides different assistive options to help users with cognitive impairments such as Dyslexia, Autism, CVA, and others, to focus on the essential elements of the website more easily.
ADHD Friendly Mode: this mode helps users with ADHD and Neurodevelopmental disorders to read, browse, and focus on the main website elements more easily while significantly reducing distractions.
Blindness Mode: this mode configures the website to be compatible with screen-readers such as JAWS, NVDA, VoiceOver, and TalkBack. A screen-reader is software for blind users that is installed on a computer and smartphone, and websites must be compatible with it.
Keyboard Navigation Profile (Motor-Impaired): this profile enables motor-impaired persons to operate the website using the keyboard Tab, Shift+Tab, and the Enter keys. Users can also use shortcuts such as “M” (menus), “H” (headings), “F” (forms), “B” (buttons), and “G” (graphics) to jump to specific elements.
Additional UI, design, and readability adjustments
Font adjustments – users, can increase and decrease its size, change its family (type), adjust the spacing, alignment, line height, and more.
Color adjustments – users can select various color contrast profiles such as light, dark, inverted, and monochrome. Additionally, users can swap color schemes of titles, texts, and backgrounds, with over seven different coloring options.
Animations – person with epilepsy can stop all running animations with the click of a button. Animations controlled by the interface include videos, GIFs, and CSS flashing transitions.
Content highlighting – users can choose to emphasize important elements such as links and titles. They can also choose to highlight focused or hovered elements only.
Audio muting – users with hearing devices may experience headaches or other issues due to automatic audio playing. This option lets users mute the entire website instantly.
Cognitive disorders – we utilize a search engine that is linked to Wikipedia and Wiktionary, allowing people with cognitive disorders to decipher meanings of phrases, initials, slang, and others.
Additional functions – we provide users the option to change cursor color and size, use a printing mode, enable a virtual keyboard, and many other functions.
Browser and assistive technology compatibility
We aim to support the widest array of browsers and assistive technologies as possible, so our users can choose the best fitting tools for them, with as few limitations as possible. Therefore, we have worked very hard to be able to support all major systems that comprise over 95% of the user market share including Google Chrome, Mozilla Firefox, Apple Safari, Opera and Microsoft Edge, JAWS and NVDA (screen readers).
Notes, comments, and feedback
Despite our very best efforts to allow anybody to adjust the website to their needs. There may still be pages or sections that are not fully accessible, are in the process of becoming accessible, or are lacking an adequate technological solution to make them accessible. Still, we are continually improving our accessibility, adding, updating and improving its options and features, and developing and adopting new technologies. All this is meant to reach the optimal level of accessibility, following technological advancements. For any assistance, please reach out to
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John wright –
Claims it has an “audible” alert.
Nothing in instructions as to how the leak detection works.
How does an audible alert work with no battery or sounder?
Unit is constantly refilling tank, even when it has not been flushed!
Danco (store manager) –
Good Morning John,
Thank you for choosing Danco products. This fill valve is designed to be a bit nosier when doing a short fill, such as what you are experiencing. This is how it alerts you to the fact that you have a leak. We will let our Marketing Team know that there...Read More
Stanley McCall –
The nut on the bottom has two tabs sticking out so i could not turn it because they hit the toilet so i cut them almost completely off. Them i could not tighten it enough with my fingers for it to click but it is round so i could not put a wrench on it. I finally got it to cli...Read More
Danco (store manager) –
Good Morning Stanley,
Thank you for taking the time to let us know about your situation. We know it can be frustrating when a product does not perform as you intended. However, we do have a solution for the foam insulated tank! The HC550 Fill valve would provide the best...Read More
Mike –
Garbage, only a few months old and now it runs non stop here and there no rhyme or reason as to why. Don’t buy, just replace what you have with factory stuff that’s what I’m doing next
Danco (store manager) –
Good Morning Mike,
Thank you for reaching out to us to let us know about your situation. We know it can be frustrating when a product does not perform as intended. I will send over your review to our Engineering team so that they can take a look at the issue. Danco striv...Read More
Rob –
I’m actually a fan of these fill valves. I don’t need the tank cleaning feature, but I love the ability to adjust the bowl fill rate. You can save a good amount of water by not overfilling your bowl. We are actually seeing the difference in our water bills.
Denis Philippot –
I bought this fill valve about a year ago. It was easy to adjust and install, no complaints there. Yesterday the demand flow stopped after a flush. After a cursory examination and intermittent operation, I decided I needed to more closely inspect the valve assembly. It was sim...Read More
Danco (store manager) –
Good Morning Denis,
Thank you for letting us know about your DIY experience. We know it can be frustrating when a product does not perform as intended. We would love to make this right. If you would contact our Product Support team at 800-523-5135 (option 2), or if you p...Read More
Gary –
Junk. Absolute junk. I have. To replace these every three months. On my third one for the same toilet. Luckily they still look new, so I buy another one, dry the 3 month old ones off, and take them back. Not going to waste my time with this brand anymore, however. They clog or...Read More
Danco (store manager) –
Good Afternoon Gary,
Thank you for letting us know of the situation you have encountered. We apologize for the inconvenience you have experienced. We do offer warranty replacement for the HC660 Fill Valve. If you could reach out to our Product Support team at 800-523-513...Read More
Regina –
By the way, if you rate this low, this website still displays it as 5 stars. Crap product.
Danco (store manager) –
Good Evening Regina,
Thank you for your feedback. We are concerned that you have had a negative experience with the HC660. We know it is frustrating when a product does not perform at a high level and does not meet your expectations. We value your feedback and would welc...Read More
Loretta Garrett –
annoyed…I wish I did not switch this over from the old ball and chain. I am on my third switch in the last three years and these are not cheap. Every now and then I hear water running for about 10 and I am not in the mood to attempt another problem solve. I have rerea...Read More
Danco (store manager) –
Good Morning Loretta,
We know it can be frustrating when a product does not perform as intended. Unfortunetly, products can fail for a number of reasons. We do, however, offer a warranty replacement for the HC660 Fill Valve. If you could reach out to our Product Support ...Read More
Larry Tuell –
Have had my Hydro Clean system installed for several years with no problem. Recently our well ran dry. The new well water is still running dirty which I think, caused the fill valve not to fully close stopping the water flow. I don’t really want to replace right away ...Read More
Danco (store manager) –
Good Afternoon Larry,
From what you have described it seems as if there might be debris in the fill valve keeping it from sealing (no matter how much you clean debris can find its way somewhere and cause issues unfortunately). See below for some steps on correcting this....Read More
Geoff Northcote –
Brutal. I’ve installed dozens of fluidmasters or old style toilet parts with so much less hassle. And right out of the box it wouldn’t shut off. Would give it zero stars if I could.
Danco (store manager) –
Good Morning Geoff,
Thank you for choosing Danco products. We apologize for the inconvenience you have experienced. Sometimes when installing new parts, mineral buildup in the system breaks loose and can clog the diaphragm in the unit, not allowing it to close properly. ...Read More
Jeff Whitney –
I’m just a home owner, not a plumber. My tank was not filling, so I went to a big box store and your product was prominently displayed in its own P.O.P stand. So I bought it. It took 15 minutes from removal of the malfunctioning old one, to installing the HydroClean®. ...Read More
Karen –
HOrrible to install I can’t get the smart nut to go under my water pipe. Now I have np toilet for the weekend because customer service isn’t available. I would go with a different brand.
Susan W. –
I installed this product in my 4 toilets over 9 years ago. They were easier to install than it was to remove the original toilet valves. I have not had any issues with any of them until Just recently, which is pretty darn good considering how long I’ve had them.
Marc Bale –
HC 660 leaking out the top, not fillibg through the fill valve. Bowl eventually fills but very slowly. Whay do I do? Thx and please don’t publish. I have been happy with the product unyil now.
Danco (store manager) –
Good Afternoon Marc,
Thank you for your inquiry. We apologize for the inconvenience you have experienced. It seems as if there might be debris in the fill valve keeping it from sealing. The round black rubber seal underneath the piston assembly that the float arm attach...Read More
Hearty –
Easy to install. However I’ve installed two today and the both will. Not. Stop. Flushing. Every 3-5 minutes they flush. It’s really annoying and I can’t figure out any way to get help besides this. I tried calling DanCo but the offices are closed.
Danco (store manager) –
Good Afternoon,
Thank you for reaching out to us and letting us know of the experience that you had. We apologize for the inconvenience you have experienced this past weekend. The noise that you hear with the HydroClean is the toilet fill valve filling up the tank to th...Read More
Dale Malloy –
I like these valves and installed two in my home within a couple of weeks of each other. The problem is that one of them twists when flushed, and the float catches and does not float to cut off the water flow. Any ideas on how to eliminate the twisting motion will be appreci...Read More
Danco (store manager) –
Good Morning Dale,
Thank you for reaching out to us. There could be a multitude of things causing the issue. It could be the positive lock (height adjustment is not locked in place) or the smart nut is not tightened down enough that is making the unit twist when being fl...Read More
Hi –
Is it that hard to design a simple toilet fill valve that works? As I read here, about three customers are kind of satisfied and the rest just want their money back.
John Thomopoulos –
Installed “Hydroclean” water valve, water running, not in the toilet, tank won’t fill.
Danco (store manager) –
Good Morning John,
Thank you for your inquiry. We apologize for the inconvenience you have experienced. It seems as if there might be debris in your Hydro Clean fill valve keeping it from sealing. To correct this, please try the following:
1.Turn off the water at ...Read More
Bobby H –
Terrible. I purchased this fill valve four months ago. Today the water only started coming out the top instead of the bottom so it filled very slowly. I discovered this is common problem and followed the instructions from a different review to disassemble the arm and clean o...Read More
Ron Marshall –
After 3 months it’s making the “audible leak” sound. Nothing in the instructions about what to when you hear it…… nothing…..can see water leaking into the bowl.
What a piece of crap. Going to Home Depot and get the old reliable system. I’m th...Read More
dean –
Thumb screw can be 1.5″ longer. My toilet water overflow tube is 5.5″, this toilet fill valve fits for 6.5″ overflow tube or longer. To compensate, I loosen the thumb screw to the very top of the float but very weak holding. I wish they can make the thumb sc...Read More
CMoore –
Needed to replace the fill valve in my rental (because landlord never does anything) and saw this when choosing. Installation wasn’t too hard, though it wasn’t clear whether there was supposed to be the cleaning hose and mini valve hose in the box, or just the for...Read More
The instructions were vague in some points but I *think* (hope) I got it right. *Definitely* had to tweak it a bunch in order to find the combination of height, direction, hose length, and valve openness that I wanted. But so far it’s working. Upon flushing, water fills the bowl (though lingers a bit even though mini valve is almost totally closed). Water stops filling the tank at the physical volume I want, and so far there’s no leaks or other issues.
If in three months, or a year, or some too-short amount of time passes and the valve stops working properly, I’ll be back to record the problem.
Teresa Collins –
Total junk. Failed within three months. Do not buy.
DP –
Too bad failed in 2 years. only couple of years old and now it runs non stop here and there no reason as to why. Just replaced with another brand now.
Tim12 –
I would like Danco to extend the thumbscrew one more inch longer for shorter overflow tube so I can depress the float down a bit further. It wouldn’t cost much more but can give us more option.
Danco (store manager) –
Good Morning Tim,
We have passed on your note to our Engineering team for further review. Thank you for your input. We take our customers concerns and suggestions seriously so we can provide the best experience possible.
Michael –
I don’t know if I even want to start to install this item. They claim to have a how-to video (which they don’t) and by the customer feedback, I think I’ll save myself the grief and not even attempt the installation and just return the unit.
Steve Hosier –
I just wanted to know when you lubricate the seal you put the silicon grease all over the seal or only specific areas. I took out the debris and rinse the the white cover and pin. When i put it together again, the folw of water did not stop. I figure it may be because i did no...Read More
Steve –
I purchase a new hydroclean ez fill valve and it runned great. Next day it would not stop running water. I followed to instructions to clean it out and there was a small piece of plastic stuck below the white cover where the black seal was. I check the seal …no holes oth...Read More
Brittany Szcerbakow –
Hate the product. Says it needs no tools but now I can’t take the system off my tank because all the bolts just keep spinning and the valve itself spins when I turn the bolts outside the tank. My hands are raw from trying to unscrew it. I now have no toilet to use
Mark Maguire –
Good design features. Reliable for about 8 years. Then a little repair was needed. I like the water flow adjustment feature for the overflow tube (it fills the bowl after each flush). This allowed water savings over the years. I also like the feature of the water jet across...Read More
Omar –
It worked for about a week, then kept on running from the j tube filling up the tank until it goes in the overflow.
Danco (store manager) –
Good Morning!
Thank you for your inquiry. We apologize for the inconvenience you have experienced. It seems as if there might be debris in the fill valve keeping it from sealing. To correct this, please try the following:
1. Turn off the water at the wall.
...Read More
Cy –
Hi I bought this device for my toilet about 3 years ago. Recently after flushing it does not seem to refill my water tank any more. I have to close the water valve near the valve then re-open for the water to start filling the toilet tank again. However once it stops fill (...Read More
Hithere –
It’s not realistic because you have to flush few times each visit for the toilet or you end up with frequent toilet clog. I prefer one full tank of water and flush everything in one push.
Con: the float needs to redesign, it doesn’t always float up. Maybe a l...Read More
Kelvin –
I’m amazed at the exceptionally poor engineering of the valve diaphragm connection to the metal stainless connecting rod pin. It is held on by friction detent in the pin. In short, it relies on the tension of the rubber to attach to the pin. Brilliant idea. Rubber parts ...Read More
Jon Bianchi –
I have encountered the same problem after installing a new Hydroclean 660 . The old one lasted about 5 years then quit, it would cycle on if I turned the Angle Valve on and off . I decided to replace it with the same type . Before I assembled it I ran water through the fill li...Read More
Danco (store manager) –
Hi Jon,
It sounds like the black seal in your unit is bad. If you could contact our Technical Support team at [email protected], we’ll be more than happy to send out a replacement seal.
Jon Bianchi –
Just want to thank the support team, after reading my review. They were able help me with a new rubber seal. Everything is working like it should. Thanks again ,Quick response
Carlos –
I have four of these valves in use for years. last year one failled, called costumer service and they sent me a replacement promptley, which is still working great,
Recently another one was overfilling with a delayed shut off. Called in and within a week I received four ...Read More