OEM Replacement Fill Valve for Gerber 99-790 | Okala Plumbing Supply

Overview

The OEM replacement fill valve for the Gerber 99-790 adjustable valve is designed to restore reliable toilet performance in Gerber Maxwell SE tanks. This part aims to replace worn, leaky, or noisy valves and is built to match the original specifications for a straightforward swap. Whether you are a DIY homeowner or a professional plumber, this kit is intended to simplify replacement while preserving the dual flush functionality many users rely on.

By focusing on compatibility and ease of use, this replacement part emphasizes a balanced approach to toilet maintenance. The design mirrors the function of the original component, offering a familiar fit and operation that many installations expect. While the goal is durable, consistent fills, the actual results may vary based on the overall plumbing setup and how well the installation is completed.

Included in the kit

• Fill valve
• Refill tube
• Coupling nut
• Intake filter
• Cone washer
• Installation instructions

Compatibility and model coverage

This OEM replacement is suitable for multiple models within the Gerber Maxwell SE line, including the 1.1 gpf and 1.6 gpf dual flush tanks 28-190 and 28-195. If you are unsure about compatibility, check the tank model information usually printed inside the tank lid or back wall for reassurance before installation.

Design notes and revision compatibility

Component color and shape may vary slightly due to minor revisions by Gerber. However, the part remains backwards compatible with older revisions that maintain the same or improved performance characteristics.

Standards and packaging

The replacement meets or exceeds applicable US and Canadian plumbing standards, providing a dependable option for standard residential plumbing. Packaging is economical, with the valve shipped in a simple plastic bag to help keep costs down while delivering the essential components needed for installation.

Why this OEM replacement can be a smart choice

• Original Equipment Manufacturer design ensures a true-to-original fit and compatibility
• Backwards compatibility with older revisions for flexibility
• Potential for smoother fills and quieter operation when installed under proper conditions
• Compliance with standard plumbing guidelines, supporting safe, reliable use