American Standard 989370 Ballcock Kit

Product Description

The American Standard 989370 is a ballcock kit designed for toilet tank fill valve service and repair. A ballcock controls the flow of water into the toilet tank after each flush, shutting off automatically when the tank reaches the correct fill level. This kit provides the components needed to restore proper fill function in a toilet tank assembly. Plumbers and experienced DIYers install this type of kit as a direct service part when the existing fill valve fails to shut off, runs continuously, or refills slowly. It is a standard replacement item in residential plumbing maintenance.

This ballcock kit is suited for residential toilet tank applications where the existing fill valve requires replacement or repair. It is intended for use with American Standard toilet systems. Installers should verify the tank dimensions and existing fill valve configuration before installation to confirm fit. This kit is appropriate for service calls addressing running toilets, inconsistent tank fill, or worn internal valve components.

Key Features

• Complete kit format provides necessary components for fill valve replacement or repair
• Designed for toilet tank ballcock service in residential plumbing applications
• Restores proper automatic shutoff function to the toilet tank fill cycle
• OEM-sourced part for American Standard toilet systems

Compatibility

Designed as an OEM-style replacement ballcock kit for American Standard residential toilet tank assemblies.

Installation Notes

Installation is performed by a licensed plumber or qualified technician. Shut off the water supply valve at the wall before beginning work and flush the toilet to empty the tank. Follow applicable IPC guidelines for potable water supply fittings. Do not overtighten the locknut securing the fill valve to the tank to avoid cracking the porcelain.