- Brass-style toilet refill valves can often be repaired. To take a valve apart, remove the lever's screws. This allows you to lift out the float arm and valve plunger. Check the flat rubber washer on the end of the plunger. If it's worn, you can pull it out with pliers and either turn it around or replace it. This procedure usually corrects an overfilling problem. Next, reassemble the valve. If the tank continues to overfill, check to make sure the operating lever at the end of the float arm is functioning properly.
- New refill valve. To replace the entire refill valve assembly, first turn off the water supply. The tank should then be flushed and sponged out, as detailed previously. Remove the inlet nut and riser tube from the bottom of the refill valve beneath the tank. Hold the refill valve inside the tank with a padded locking plier/wrench to keep it from turning, and remove the nut beneath the tank. With the nut off, the refill valve assembly can be lifted out and a new one inserted in its place. Follow the exact instructions included with the unit you purchase.
- Finally, reconnect the riser tube and turn the water on. The tank should fill, allowing you to adjust the water level according to the instructions that were included with the valve.
- Anti-siphon valves. The best refill valves offer anti-siphon protection. In fact, this may be a requirement. This protection prevents back siphonage of toilet tank water into your home's potable water supply system if a vacuum occurs in the toilet's water supply system. Whether or not this is a code requirement, the anti-siphon valve is a good idea to protect your family and public health.
Not finding what you are looking for?