






🚽 Upgrade your flush game — efficiency meets reliability!
The Flushmate C-100501-KIT is an OEM replacement flush valve cartridge designed for Flushmate 503H pressure-assisted toilets. It features a corrosion-resistant metal build, WaterSense-certified 1.28 GPF efficiency, and includes all necessary components—duckbill valve, filter screen, and lower supply filter—for a complete, easy installation. Trusted by professionals and backed by a one-year warranty, it restores peak flushing performance while reducing water waste.









| ASIN | B00CEICNR4 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #14,859 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #442 in Toilet Replacement Parts |
| Brand | Flushmate |
| Color | Gray |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,614) |
| Date First Available | January 30, 2012 |
| Exterior Finish | Stainless Steel |
| Included Components | Part |
| Inlet Connection Type | Threaded |
| Item Weight | 8.1 ounces |
| Item dimensions L x W x H | 9.25 x 2.5 x 2.5 inches |
| Item model number | C-100501-K |
| Manufacturer | Flushmate |
| Material | Metal |
| Number Of Pieces | 4 |
| Number of Ports | 1 |
| Outlet Connection Size | 2.5 Inches |
| Outlet Connection Type | NPT |
| Part Number | 93300734 |
| Product Dimensions | 9.25 x 2.5 x 2.5 inches |
| Size | 1.28 GPF |
| Specification Met | ASME, CSA, NSF, EPA, WaterSense, ISO 9001, CE, ASSE |
| UPC | 064871420046 |
R**O
Quality Product
Product was shipped and received overnight.. Product went in easily and worked with no issues.. All the parts came with the filter ( duckbill )
G**6
This works
Once adjusted, it just worked. Positively & reliably. There is some "magic" in this design. Can't tell how it works. It looks like there is nothing wrong with the old one, but that one didn't work properly
T**R
Installing this flush cartridge is really pretty simple, trust me.
Yeah, the fancy toilet was in the house when we bought it 17 years ago and just recently I realized something had started leaking causing it to refill a couple times an hour. I was intimidated by the gear in the tank at first but watched a few videos and bought this flush valve cartridge. Installation was pretty simple and no more leaks. Now I'm seriously considering upgrading the head in the other bathroom.
M**3
Did the job, toilet fixed
Ordered this hoping it would fix my flushmate pressure assisted toilet that suddenly stopped flushing. This worked great! Only issue I had was the screw used to tighten the actuator black cap didn't quite fit in the plastic screw hole. Otherwise, problem solved! Flushes better than before.
K**.
I have a great plumber but I can't call and spend $ on ...
I have a great plumber but I can't call and spend $ on everything that goes wrong in my old house. So when I can, I try to jump in and fix a problem. Such a case was when my Gerber air flush toilet (with a Sloan Flushmate 503 in the tank) suddenly stopped flushing and would not stop running unless I turned off the water supply. With a quick online search and a look in the tank, I figured out that the actuator stem had snapped - not salvageable and not anything you can rig up. It was a life saver to have this actuator replacement kit available from the manufacturer for order on Amazon with express delivery. (Surprisingly, my local big box hardware stores only offer this online. If I'm going that route, I'll use Amazon.) The part came on time and contained all replacement parts that might wear out - the actuator, an inlet filter, and duck bill valve. In short order, thanks to the clear instructions and easy to install pieces, I had everything replaced and my toilet was working perfectly again. I'm going to order another kit to have on hand. I strongly recommend that anyone with a Sloan Flushmate do the same - it's a small investment and easy to store kit.
R**E
Works like a charm
I accidentally bough a knock off Sloan Flushmate which never really worked and died within a week. This item threaded in easily, and the whole installation was a breeze. I did the Sloan Flushmate recall at the same time. (It adds a pressure regulator to keep the tank from exploding. Something that's probably worth doing.) This new cartridge flushes with the lightest of touches. It is a breeze to flush now. I did buy the plastic Sloan Flushmate install tool. It is so worth the $10 or so, even if it is a one time use. The tool fits in a corner of the toilet tank, which seems to be a great place to store it for whenever this cartridge needs replacing. The original cartridge lasted over fifteen years, so I am sure that I won't find the tool in fifteen years, if I don't hide it in the tank.
M**S
Easy to Install Flushmate Flush Valve replacement
We have 3 bathrooms in our house that use the Flushmate Flush Valve. The last time we ended up replacing one, we called the plumber and ended up with $250 bill that included labor and the part. So this time when one started to go out, I started researching and watching you tube videos online. At first, it was a little intimidating, but for the huge savings, I was willing to try. We ordered the part, and it came well packaged with the instructions clear on the packaging. For additional information, I would play/pause an instructional video we found online from the company. Suprisingly, It ended up being very easy to replace and probably took about 20-30 minutes (but that was with us (my husband and I) watching the video as we were doing the installation). We have had the new part in for almost 2 months and have had no issues with the product. I am so glad that we tried it and saved tons of money.
J**E
Stopped working after 3 months!
Our original flush valve cartridge lasted over 10 years and the o-rings finally wore out. This caused water to continue running after flushing and ran up our water bill. So I purchased this replacement back in February, followed the DYI instructions that Sloan/Flushmate has on YouTube and the problem was resolved. 3 months later, the original problem returned, but this time because top o-ring seal on the button started leaking! A family member of ours is a plumber and finally managed to stop by and check out the toilet. They confirmed that I installed the cartridge properly and came to the same conclusion that I did. The new cartridge is defective! I noticed that some others who left reviews mentioned that they recieved different cartridges. Perhaps I recieved one of the cheap knockoffs? Im not sure. All i know is that this new cartridge has already ceased to work properly and the seller/Amazon can only replace within 30 days, so I'm stuck having to buy a new one again. I contacted Sloan to see if they could do anything about this, but haven't heard back from them yet.
J**N
Quedo excelente.
J**R
worked great
S**Y
Got this to fix a leaky toilet that was continuously running between flushes and it worked to stop the leak. Easy to swap out and install the new cartridge.
N**M
The product was perfect and was easy to install. Works like new.
T**Y
Speedy shipping and the installation instructions are to a T.
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