Flushmate C-100500-KIT OEM Replacement Flush Valve Cartridge for Flushmate 500-504 – Duckbill Valve, Filter Screen & Lower Supply Filter

Refresh your Flushmate pressure-assisted toilet with the C-100500-KIT OEM replacement cartridge. Designed by Sloan Flushmate, this kit delivers regulated GPF for a consistent, high-performance flush. Built with corrosion-resistant materials, it’s engineered for durable, long-term use in busy bathrooms.

What you get

• OEM Flushmate cartridge designed for 500, 501, 503, 504 series tank systems
• Duckbill valve plus a lower filter screen for a complete replacement
• Clear instructions and a maintenance path to help restore flushing efficiency

How it supports performance

• Regulated GPF provides a controlled, dependable flush rhythm across cycles
• Durable components resist wear in high-use toilets, maintaining consistent operation
• Integrated filtration and valve components help keep water flow steady and predictable

Easy installation and upkeep

• Designed for quick replacement with common tools or the Flushmate cartridge wrench
• Regular replacement helps maintain efficiency and reduces the risk of leaks or running water

Compatibility and warranty

• Compatible with Flushmate 500, 501, 503, and 504 tank systems assembled in the USA
• Includes genuine parts with a one-year warranty and US-based product support

Replacing the cartridge can refresh the flushing performance and address common symptoms like leaks or weak flushes. While outcomes vary by use, many customers notice smoother operation and restored efficiency after installation. This OEM kit brings together the essential pieces in a single, ready-to-install package, designed to make maintenance straightforward and downtime minimal.