






🚽 Upgrade your flush game — efficiency meets reliability!
The Flushmate C-100501-KIT is an OEM replacement flush valve cartridge designed for 1.28 GPF pressure-assisted toilets, including the 503H series. It features corrosion-resistant materials, a complete kit with duckbill valve and filter screen, and ensures consistent, powerful flushing performance. Easy to install and backed by a one-year warranty, this kit restores optimal toilet function while promoting water efficiency and long-term durability.









| ASIN | B00CEICNR4 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #18,021 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #215 in Toilet Replacement Parts |
| Brand | Flushmate |
| Color | Gray |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,618) |
| 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.
M**Y
Fixed my leaky toilet
Arrived on time, installation was easy. Can’t comment on quality or longevity just yet.
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**S
OEM Replacement Parts Only
This replacement flush valve is the Flushmate OEM part and it works best for Flushmate pressure tank. The cheap China copy is a knock off flunked. Always buy the Flushmate OEM valve and other replacement parts. Be happy.
D**E
Ok
Ok
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.
Trustpilot
1 month ago
2 months ago