---
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: "41210 Ft"
currency: HUF
in_stock: true
reviews_count: 8
category: "Flushmate"
url: https://www.desertcart.hu/products/22681710-flushmate-c-100501-kit-replacement-flush-valve-cartridge-for-flushmate
store_origin: HU
region: Hungary
---

# Pressure-assist water regulation 1.28 GPF precision flush OEM engineered durability 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:** 41210 Ft
**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?** 41210 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/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

- • **Complete Replacement Kit:** Includes valve cartridge, duckbill valve, and filter screen for hassle-free installation.
- • **Corrosion-Resistant Build:** Crafted with premium materials to ensure long-lasting durability under pressure-assist conditions.
- • **Quick & Easy Installation:** Designed for straightforward replacement with basic tools or Flushmate wrenches, saving you time.
- • **Fix Leaks & Boost Efficiency:** Eliminates continuous flow and leakage issues, restoring peak toilet performance instantly.
- • **Consistent High-Performance Flush:** Delivers a powerful 1.28 gallons per flush for optimal efficiency and reliability.

## Overview

The Flushmate C-100501-KIT is an OEM replacement flush valve cartridge designed for Flushmate 503H pressure-assist toilets. Engineered for consistent 1.28 GPF flushing, it includes a duckbill valve and filter screen to restore optimal water flow and eliminate leaks. Built with corrosion-resistant materials, this kit ensures durable, long-lasting performance and easy installation, backed by a one-year warranty and US-based support.

## 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 |
|---------------|-------|
| 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 |
| Material | Metal |
| Outlet Connection Type | NPT |

## 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/41IHix-69ZL.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/51-604CKQcL.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/51q8yxPvzeL.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/51OLC6LAP8L.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/51V9xvyeoyL.jpg)

## Available Options

This product comes in different **Size** options.

## 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

### ⭐⭐⭐⭐⭐ Installing this flush cartridge is really pretty simple, trust me.
*by T***R on February 1, 2026*

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.

## 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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**Shop now:** [https://www.desertcart.hu/products/22681710-flushmate-c-100501-kit-replacement-flush-valve-cartridge-for-flushmate](https://www.desertcart.hu/products/22681710-flushmate-c-100501-kit-replacement-flush-valve-cartridge-for-flushmate)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-15*