Say goodbye to frustrating toilet cistern problems with the Fluidmaster PRO400UK Bottom Entry Float Valve — the trusted solution chosen by professional plumbers and confident DIYers alike.

Whether you're dealing with a constantly running toilet, a noisy fill cycle, or a wornout valve that's wasting water and money, the Fluidmaster 400 Series is engineered to solve it fast. Designed for straightforward bottomentry installation, you won't need specialist tools or plumbing expertise to get the job done right.

• Flexible fit for almost any cistern — adjustable height range of 9"–14" means it works across a wide variety of toilet systems, saving you the hassle of hunting for an exact match.
• Built to last — crafted from corrosionresistant materials, this valve is designed to withstand years of use without degrading, giving you lasting peace of mind.
• Slim, spacesaving profile — the narrow design slots neatly into tight cisterns where bulkier valves simply won't fit.
• Quick and straightforward installation — with a 1/2" plastic shank and intuitive bottomentry design, you can have your toilet back up and running in minutes, not hours.
• Stop wasting water — a properly functioning inlet valve means no more phantom flushes or continuous running, helping to reduce your water bill.

From a brand with decades of plumbing expertise behind them, the Fluidmaster PRO400UK is the reliable, nofuss upgrade your cistern deserves. Fix it once, fix it properly.