Fluidmaster 400H Universal Toilet Fill Valve, High Performance, 1-Pack

The Fluidmaster 400H Universal Toilet Fill Valve replaces noisy or sluggish mechanisms inside standard toilet tanks. It offers a practical fix for homeowners and renters dealing with slow fill cycles or loud refilling sounds after a flush.

A standout feature is the dual adjustment system, which provides dedicated dials for both the tank and the bowl water levels. This allows you to customize the volume of water used per flush. Additionally, the EZ-Twist height mechanism expands from 9 inches to 14 inches, helping the unit fit a broad range of tank shapes and depths across most brands.

Setup is designed to be straightforward, thanks to the included step-by-step instructions. However, because the minimum height is 9 inches, it will not fit compact or low-profile tanks shorter than that measurement. The package also only includes a single valve, so multi-bathroom updates require multiple purchases.

Verdict: The Fluidmaster 400H is a solid, adaptable choice for anyone needing to replace a noisy or slow fill valve. With its wide height range and dual water level dials, it suits almost any standard toilet tank setup.

A great fit if you:

• Have a toilet that currently fills slowly or makes excessive noise
• Want precise control over both tank and bowl refill levels to reduce water waste
• Need an adjustable replacement valve that fits standard tanks between 9 and 14 inches tall

Consider something else if you:

• Have a specialty compact toilet tank under 9 inches in height
• Need a multi-pack to repair several bathrooms at once

Will this fill valve fit my toilet brand?
Yes, it features a universal design engineered to fit most toilet models and brands.

How tall is this valve?
It features an EZ-Twist mechanism that adjusts in height from 9 inches to 14 inches to accommodate various tank sizes.

Can I adjust the water volume?
Yes, it includes separate dials for adjusting both the tank and bowl water levels to customize your flush.