---
product_id: 22681710
title: "Flushmate C-100501-KIT Replacement Flush Valve Cartridge for Flushmate 503H Pressure Assist Systems - Includes Duckbill Valve, Filter Screen & Lower Supply Filter, 1.28 GPF Systems, OEM Part"
brand: "flushmate"
price: "€ 108.17"
currency: EUR
in_stock: true
reviews_count: 13
category: "Flushmate"
url: https://www.desertcart.es/products/22681710-flushmate-c-100501-kit-replacement-flush-valve-cartridge-for-flushmate
store_origin: ES
region: Spain
---

# 1.28 GPF precision flush Complete kit with valve & filters OEM-grade corrosion-resistant metal Flushmate C-100501-KIT Replacement Flush Valve Cartridge for Flushmate 503H Pressure Assist Systems - Includes Duckbill Valve, Filter Screen & Lower Supply Filter, 1.28 GPF Systems, OEM Part

**Brand:** flushmate
**Price:** € 108.17
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game — reliable, efficient, and built to last!

## Quick Answers

- **What is this?** Flushmate C-100501-KIT Replacement Flush Valve Cartridge for Flushmate 503H Pressure Assist Systems - Includes Duckbill Valve, Filter Screen & Lower Supply Filter, 1.28 GPF Systems, OEM Part by flushmate
- **How much does it cost?** € 108.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/22681710-flushmate-c-100501-kit-replacement-flush-valve-cartridge-for-flushmate)

## Best For

- flushmate enthusiasts

## Why This Product

- Trusted flushmate brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durability That Lasts:** Crafted from corrosion-resistant materials to withstand pressure-assisted systems and reduce replacement frequency.
- • **Quick DIY Installation:** Designed for easy setup with basic tools or Flushmate wrenches, minimizing downtime and maintenance stress.
- • **All-in-One Replacement Kit:** Includes flush valve cartridge, duckbill valve, and filter screens for hassle-free, full system restoration.
- • **Fix Leaks & Boost Efficiency:** Eliminates common leaks and continuous flow issues to restore peak flushing performance and save water bills.
- • **Consistent High-Performance Flush:** Engineered for regulated 1.28 gallons per flush, ensuring powerful and eco-friendly water use every time.

## Overview

The Flushmate C-100501-KIT is an OEM replacement flush valve cartridge designed for 1.28 GPF pressure-assisted toilets in the Flushmate 500 series. Made from corrosion-resistant metal, it includes a duckbill valve and filter screens to ensure consistent, powerful flushing while preventing leaks. Easy to install and backed by a one-year warranty, this kit restores optimal toilet performance with durable, professional-grade components assembled in the USA.

## Description

desertcart.com: Flushmate C-100501-KIT Replacement Flush Valve Cartridge for Flushmate 503H Pressure Assist Systems - Includes Duckbill Valve, Filter Screen & Lower Supply Filter, 1.28 GPF Systems, OEM Part : Tools & Home Improvement

Review: 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 )
Review: 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

## Features

- REPLACEMENT FLUSH VALVE CARTRIDGE: This replacement flush valve cartridge kit is designed by Sloan Flushmate for every Flushmate system. The Cartridge delivers regulated gallons per flush for a consistent, high-performance flush. Built with corrosion-resistant materials and engineered for long-lasting durability, it ensures reliable performance and easy maintenance.
- EFFICIENT WATER FLOW REGULATION: The Flushmate cartridge controls the release of pressurized water, ensuring a powerful flush and optimal performance for Flushmate pressure-assisted toilets.
- COMPLETE KIT FOR EASY REPLACEMENT: The package contains the Flushmate brand valve cartridge, duckbill valve, and lower supply filter screen, providing everything needed for a full replacement and restoring flushing efficiency.
- FIX LEAKS & RESTORE PERFORMANCE: Replacing the Flushmate cartridge resolves common problems such as continuous water flow and leakage, bringing your toilet back to peak flushing performance.
- QUICK & EASY INSTALLATION: Installing the Flushmate cartridge is simple and can be done with basic tools or by using the Flushmate cartridge wrench (ST100500) or 3-in-1 wrench (ST100100). Regular replacement and maintenance ensure long-term performance and efficiency of your Flushmate system.
- OEM FLUSHMATE CARTRIDGE: This is an original equipment manufacturer (OEM) replacement cartridge, designed for use with 500, 501, 501A, 501B, 503, and 504 series Flushmate Tank systems assemblied in USA.
- DURABLE & LONG-LASTING PERFORMANCE: Built to withstand the demands of pressure-assisted toilet systems, this Flushmate cartridge is made of high-quality materials to ensures reliable performance over time, reducing the need for frequent replacements. Trusted by professionals and homeowners.
- INCLUDES DUCKBILL VALVE & FILTER SCREEN: The Flushmate cartridge assembly includes a duckbill replacement valve for the upper supply, a filter screen, and detailed instructions for installation and maintenance.
- FLUSHMATE GENUINE PARTS: Our products perform at their best when maintained exclusively using Flushmate Genuine Parts. We offer the largest selection of best-in-class parts, manufactured and tested to Flushmate specifications, designed for the most reliable commercial restroom products. Assemblied in the USA.
- ONE YEAR WARRANTY: The Flushmate Cartride is backed by a limited one-year warranty and US based product support from Flushmate, ensuring peace of mind and dependable performance for reliable use and long-term satisfaction.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CEICNR4 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #27,135 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #194 in Toilet Replacement Parts |
| Brand | Flushmate |
| Color | Gray |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,610) |
| 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 |
| UPC | 064871420046 |

## Product Details

- **Brand:** Flushmate
- **Exterior Finish:** Stainless Steel
- **Inlet Connection Type:** Threaded
- **Item dimensions L x W x H:** 9.25 x 2.5 x 2.5 inches
- **Manufacturer:** Flushmate
- **Material:** Metal
- **Number of Ports:** 1
- **Outlet Connection Size:** 2.5 Inches
- **Outlet Connection Type:** NPT
- **UPC:** 064871420046

## Images

![Flushmate C-100501-KIT Replacement Flush Valve Cartridge for Flushmate 503H Pressure Assist Systems - Includes Duckbill Valve, Filter Screen & Lower Supply Filter, 1.28 GPF Systems, OEM Part - Image 1](https://m.media-amazon.com/images/I/21RSw6xw4RL.jpg)
![Flushmate C-100501-KIT Replacement Flush Valve Cartridge for Flushmate 503H Pressure Assist Systems - Includes Duckbill Valve, Filter Screen & Lower Supply Filter, 1.28 GPF Systems, OEM Part - Image 2](https://m.media-amazon.com/images/I/21cyavikNgL.jpg)
![Flushmate C-100501-KIT Replacement Flush Valve Cartridge for Flushmate 503H Pressure Assist Systems - Includes Duckbill Valve, Filter Screen & Lower Supply Filter, 1.28 GPF Systems, OEM Part - Image 3](https://m.media-amazon.com/images/I/31A8Y2caanL.jpg)
![Flushmate C-100501-KIT Replacement Flush Valve Cartridge for Flushmate 503H Pressure Assist Systems - Includes Duckbill Valve, Filter Screen & Lower Supply Filter, 1.28 GPF Systems, OEM Part - Image 4](https://m.media-amazon.com/images/I/31CT97nKwpL.jpg)
![Flushmate C-100501-KIT Replacement Flush Valve Cartridge for Flushmate 503H Pressure Assist Systems - Includes Duckbill Valve, Filter Screen & Lower Supply Filter, 1.28 GPF Systems, OEM Part - Image 5](https://m.media-amazon.com/images/I/31OG3OhQKwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality Product
*by R***O on November 19, 2025*

Product was shipped and received overnight.. Product went in easily and worked with no issues.. All the parts came with the filter ( duckbill )

### ⭐⭐⭐⭐⭐ This works
*by G***6 on December 16, 2025*

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

### ⭐⭐⭐⭐⭐ I have a great plumber but I can't call and spend $ on ...
*by K***. on February 28, 2015*

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.

## Frequently Bought Together

- Flushmate Original Part C-100502-KIT Flushing Cartridge kit 504 series for M-102540-C K-3597 (includes Duckbill and inlet screen)
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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-28*