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🚽 Upgrade your throne with the #1 fill valve—flush smarter, not harder!
The Fluidmaster 400A Anti-Siphon Toilet Tank Fill Valve is the world’s best-selling, universally compatible solution to noisy toilets. Featuring a corrosion-resistant design, an easy-to-turn water level adjustment dial, and a pre-installed shank washer, it ensures quick installation and reliable anti-siphon protection. Adjustable height from 9 to 14 inches makes it perfect for most toilet tanks, delivering a quieter, water-efficient flush every time.








| ASIN | B00002ND6R |
| Best Sellers Rank | #424,765 in Home Improvement ( See Top 100 in Home Improvement ) #751 in Flush Valves |
| Brand Name | Fluidmaster |
| Customer Reviews | 4.7 4.7 out of 5 stars (4,714) |
| Exterior Finish | Plastic |
| Global Trade Identification Number | 00039961000026 |
| Inlet Connection Type | Flange |
| Item Dimensions | 30.5 x 7.6 x 31.8 Centimeters |
| Item Type Name | Anti-Siphon Toilet Tank Fill Valve |
| Item Weight | 0.5 Pounds |
| Manufacturer | Fluidmaster |
| Manufacturer Part Number | 400ARP25 |
| Model Number | 100554467 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Number of Ports | 2 |
| Outlet Connection Type | EZ-twist |
| Size | 1 Pack |
| Specification Met | EPA, NSF, UPC, IAPMO, UL, ASME, ANSI, MSS |
| Unit Count | 1.0 Count |
| Valve Type | Globe Valve |
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