Fluidmaster 400a Toilet Fill Valve Universal Fit

Product Description

The Fluidmaster 400A is a universal toilet fill valve designed for reliable, long-lasting performance in residential and commercial toilet tanks. This fill valve controls the flow of water into the toilet tank after each flush, shutting off automatically once the tank reaches the correct water level. It is one of the most widely used toilet fill valves in the plumbing industry, trusted by plumbers, maintenance technicians, and contractors across the country. The 400A fits most standard toilet tanks and is a go-to replacement part for worn-out or leaking ballcock-style fill valves. Its adjustable height range of 9 inches to 14 inches allows it to fit a wide variety of toilet tank sizes without requiring multiple SKUs or specialty parts. The body is constructed from durable plastic engineered to resist corrosion and mineral buildup common in water supply lines. Installation is straightforward. The pre-installed shank washer speeds up the setup process by eliminating one of the most common installation steps. The redesigned tank water level adjustment dial is easier to turn than earlier models, allowing technicians to dial in the correct water level quickly and without tools. Proper water level adjustment helps reduce phantom flushing, water waste, and running toilet noise. Plumbing professionals keep the Fluidmaster 400A on hand as a standard repair part for toilet tank rebuilds, rental property maintenance, and new installation work. It connects to standard 7/8 inch tank openings and works with most major toilet brands. Whether you are replacing a failing fill valve on a service call or stocking your truck for routine maintenance work, the 400A delivers consistent, dependable results.

• Adjustable height from 9 inches to 14 inches fits most standard toilet tanks
• Pre-installed shank washer reduces installation time on the job
• Redesigned water level adjustment dial for faster, easier tank calibration

Product Highlights

The Fluidmaster 400A is a universal toilet fill valve built for fast installation and reliable daily performance. Its adjustable design and simplified setup make it a dependable choice for plumbing professionals handling toilet repairs and replacements.

Product Information

Standard Information

• Brand: FLUIDMASTER
• Manufacturer Part Number: 400A

Technical Specifications

• Type: Fill Valve
• Height Range: 9 inches to 14 inches
• Material: Plastic
• Application: Plumbing