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HC660 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.

Model # HC660X
Plumber Pick Water Saving
2.58 out of 5 based on 12 customer ratings
12 customer reviews Write a review

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Product Description

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
  • Calibrates to adjust the exact amount of water needed to help save on water usage
  • Mini valve to control amount of water going back into the bowl
  • Sounds an audible alert when a leak is detected
  • Jets clean tank and parts with every flush
  • Cleans tank by removing rust and sediment
  • Shuts off water inside tank making repairs a snap
  • Shut off feature at the top of the valve quickly shuts off valve if tank is overflowing
  • Refills quickly: height adjusts from 11 in. to 13.8 in.
  • 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 (lb.)0.38
  • OEM BrandUniversal
  • Product Height(in).10.50
  • Product Width(in).3.00
  • MaterialPlastic
  • Product TypeFill Valve

How to video

  View Instructions HC660X Download Instructions

12 reviews for HC660 HydroClean® Water-Saving Toilet Fill Valve with Cleaning Tube

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  1. 5 out of 5

    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.

  2. 5 out of 5

    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

  3. 1 out of 5

    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

      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

  4. 4 out of 5

    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

      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

  5. 2 out of 5

    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

      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

  6. 1 out of 5

    By the way, if you rate this low, this website still displays it as 5 stars. Crap product.

    • Danco

      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

  7. 1 out of 5

    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

      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

  8. 2 out of 5

    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

      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

  9. 5 out of 5

    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.

  10. 1 out of 5

    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

      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

  11. 2 out of 5

    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

      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

  12. 2 out of 5

    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

      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

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