Flushmate® Cartridge Kit for 1.6 & 1.0 gpf Flush Models, 1/ea (C-100500-KIT)

Product Overview

The Flushmate® C‑100500‑KIT Flush Valve Cartridge is a comprehensive OEM replacement cartridge kit crafted to keep your Flushmate® pressure-assist toilet performing at its best. Designed for use with 1.6 gpf and 1.0 gpf Flushmate® systems—including Series 501A, 501B, 503 and 504—this kit contains a genuine flush valve assembly, independent adjustor with set screw, duckbill valve and lower supply filter screen to ensure proper water control and sealing integrity. The flush valve cartridge is one of the most critical moving parts of a pressure-assist system, responsible for opening and closing to deliver water efficiently to the bowl during each flush. Over time, wear or damage can lead to issues like weak flushing action, water draining into the bowl, or continuous running; replacing the cartridge can restore reliable performance and water savings. Suitable for both one-piece and two-piece toilets that use Flushmate® technology, this kit offers a durable, easy-to-install solution trusted by plumbers and DIY homeowners alike to maintain strong, consistent flushes and extend the life of your toilet system.

Features

• Designed to replace the flush valve cartridges for 1.6 and 1.0 gpf Flushmate models including Series 501A, 501B, 503, and 504
• The Flushmate flush valve cartridge assembly is located in the center of the Flushmate system and accessed from the top of the Flushmate system
• One of the few moving parts and needs to be maintained for optimum performance
• The cartridge assembly is the main valve that opens and closes to deliver the water to the toilet bowl
• Why would you need to replace the Flushmate cartridge? Some common reasons include:
       - Sluggish flush
       - Water draining from around the toilet rim
       - Ware in cartridge area
       - Flushmate system not setting up
• Each kit includes:
       - Genuine Cartridge Assembly
       - Independent Adjustor with set screw
       - Duckbill, Upper Supply
       - Filter Screen, Lower Supply