10 Best Toilet Fill Valves 2025 in the United States

The Fluidmaster 400H-002 Performax Universal Toilet Fill Valve is a popular choice for those looking to replace noisy or slow-filling valves. One of the standout features is its quiet operation, which is a significant improvement over many other fill valves, making it an excellent option for households sensitive to noise. Its universal fit ensures compatibility with most toilet models and brands, adding to its versatility.

Additionally, the EZ-Twist height adjustment feature, which ranges from 9 to 14 inches, allows for a customizable fit in various tank sizes, supporting precise water level adjustments for efficient flushes and water conservation. Installation is straightforward, thanks to the step-by-step instructions included, making it accessible even for those without professional plumbing experience.

Durability-wise, the valve is constructed from plastic and rubber, which should offer reasonable longevity, and it comes with a 7-year manufacturer warranty for added peace of mind. However, some users might find the plastic build less robust compared to metal alternatives. In summary, the Fluidmaster 400H-002 offers a solid balance of quiet performance, ease of installation, and adjustable features, making it a reliable choice for most standard toilet setups.

The Korky 528MP QuietFILL Platinum Fill Valve is a solid choice for most toilets, boasting compatibility with 99% of models, whether 2-piece or 1-piece. This ensures wide usability and makes it a go-to solution for various toilet repair needs. One of its standout features is the ease of installation, highlighted by the twist-lock adjustment mechanism, allowing users to install it in less than 5 minutes, even with minimal plumbing experience.

The valve is adjustable from 7.75 to 13.5 inches, providing flexibility to fit different toilet tank sizes. Additionally, the Korky 528MP is designed to operate quietly, making it a great option for those sensitive to noise. Durability is another strong point, with the valve made from robust materials like plastic and chlorazone red rubber, which resist wear and tear over time.

Made in the USA, it adheres to high manufacturing standards and meets IAPMO and ASSE specifications. Potential drawbacks include its reliance on plastic components, which may not be as long-lasting as metal counterparts, although the rubber parts do enhance durability. In summary, the Korky 528MP QuietFILL Platinum Fill Valve is a versatile, easy-to-install, and durable option suitable for most toilets, ideal for users looking for a quick and quiet fix.

The Korky QuietFILL 2X Long Life Toilet Fill Valve is a versatile product that fits 99% of toilets, which makes it highly compatible and a reliable choice for most users. Its ability to adjust easily in height allows for a quick and straightforward installation, a significant advantage for those who prefer DIY solutions.

Designed to work well with newer high-efficiency toilets (HET), it maximizes toilet performance by delivering the right amount of water, addressing common issues such as running, noisy, slow refilling, or weak flushing toilets effectively. Users have praised its quiet operation, making it a good choice for those sensitive to noise in their bathrooms.

Constructed from resin, plastic, and rubber, the product is lightweight yet durable, promising long-term use. However, some users might find the need for adjustments to fit certain toilet models a bit cumbersome. With certifications like UL and WaterSense, the Korky QuietFILL 2X stands out as a reliable, efficient, and user-friendly fill valve suitable for almost any household.