Fluidmaster 100000088 Flush Valve Flapper Repair Kit

Product Description

The FLUIDMASTER 100000088 is an adjustable toilet tank flush valve and flapper repair kit designed for residential toilet tank service. The kit addresses two of the most common sources of toilet water waste and running-tank noise: a worn flapper and a faulty fill or flush valve. Built from plastic for corrosion resistance, this kit is engineered for straightforward replacement work inside a standard toilet tank. The 3-inch inlet size accommodates common toilet tank configurations, and the adjustable design allows the technician to dial in the correct flush volume for the specific fixture.

This repair kit is suited for residential plumbing applications where a toilet tank is running, leaking internally, or failing to flush correctly. Plumbers and experienced DIYers install this type of kit during routine toilet maintenance or as a targeted fix when tank components have degraded over time. It is appropriate for standard two-piece and many one-piece toilet configurations that accept a 3-inch flush valve assembly.

Key Features

• Adjustable design allows flush volume calibration to match fixture requirements
• Includes both flush valve and flapper for a complete tank repair in a single kit
• 3-inch inlet size fits common residential toilet tank configurations
• Plastic construction resists corrosion and mineral buildup in tank environments
• Addresses running-tank and internal leak issues simultaneously

Compatibility

Designed as an OEM-style replacement repair kit for residential toilet tanks requiring a 3-inch flush valve assembly. Verify existing valve size and tank configuration before installation.

Installation Notes

Installation is performed by a licensed plumber or qualified DIYer following standard IPC guidelines. Shut off the water supply at the angle stop valve below the toilet and flush to drain the tank before beginning any work. Remove standing water from the tank with a sponge or towel before disconnecting components. Do not overtighten plastic fittings, as this can crack the tank or valve body.

Technical Specifications

• Inlet Size: 3 inches
• Type: Adjustable
• Material: Plastic
• Shipping Length: 4.63 inches
• Shipping Width: 6 inches
• Shipping Height: 8.2 inches
• Shipping Weight: 1.09 pounds

Standard Information

• Brand: FLUIDMASTER
• Manufacturer Part Number: 100000088