




🚨 Stop leaks before they start — smart, sleek, and built to last!
The Fluidmaster 400LS Leak Sentry Pro Fill Valve is a high-performance, leak-detecting toilet fill valve designed for durability and efficiency. Featuring a locking action that alerts users to leaks early, it prevents water waste and costly damage. Ideal for multi-housing applications, it offers adjustable bowl refill control to avoid overfilling, ensuring your toilet remains fully operational. Made in the USA with premium plastic and certified to CSA, NSF, RoHS, and UL standards, it comes with a lifetime warranty for peace of mind.




| Material | Plastic |
| Brand | Fluidmaster |
| Item dimensions L x W x H | 5.75 x 16 x 14.5 inches |
| Exterior Finish | Plastic |
| Inlet Connection Size | 0.88 Inches |
| Inlet Connection Type | Threaded |
| Outlet Connection Type | NPT |
| Number of Ports | 1 |
| Outlet Connection Size | 0.88 Inches |
| Specification Met | CSA, NSF, RoHS, UL |
| Global Trade Identification Number | 00039961004000 |
| Manufacturer | Fluidmaster |
| UPC | 717029396419 039961415080 039961004000 |
| Part Number | 400LS |
| Item Weight | 9.3 ounces |
| Product Dimensions | 5.75 x 16 x 14.5 inches |
| Item model number | 400LS |
| Is Discontinued By Manufacturer | No |
| Size | Pack of 1 |
| Color | Black |
| Item Package Quantity | 1 |
| Included Components | Rough Plumbing;Parts and Repair;flush-valves |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Lifetime |
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