It's time to replace your fill valve with Hyper Tough Complete Toilet Repair Kit. How do you know it is time Here are a few tell-tale signs: #1 does your water continues to run. Does your water level in the tank continue to increase even after valve shuts off. Is your fill valve not shutting off properly or is your toilet slow to refill If any of these scenarios are true, Hyper Tough is your solution. The Hyper Tough toilet tank repair kit includes everything you need to replace the fill valve, flapper, road and float that fits most toilets. It includes an adjustable anti-siphon fill valve and easy to follow installation instructions.