Fixing Toilet Fill-Valve and Flush-Valve Problems
Some toilet valves can be repaired, others must be replaced; here's how.
Repairing a Valve
Usually, if a valve leaks or gets clogged and sluggish, the best solution is to replace it, because valves are inexpensive. However, it may be worth your while to repair a valve like the one shown here, because it will save you the trouble of draining the tank. You may or may not need to replace the rubber parts. Your valve may not look like this one, but the steps are pretty much the same.
Installing a Fill Valve
Replacing a fill valve is one of the most common toilet repairs, because it takes less than an hour, costs less than $10, and can make your toilet run like new. Here we show one of the most common types of valves, called a float cup, but other types can be installed in much the same way.
A dual-flush toilet saves water by offering two flush levels: a small flush of about 1 gal. for liquid only and a more forceful flush of 1.2 gal. to 1.6 gal. for solids. You can replace your existing toilet with one that has a dual-flush feature, or you can save money and effort by retrofitting your current toilet with a dual-flush valve. These valves are now widely available at hardware stores and home centers.
|TIP: The unit shown here is installed at the overflow tube only. Some kits also include a replacement for your fill valve.
|TIP: If the existing flush valve seat is not compatible with the dual-flush valve, you will need to replace it with one that is compatible.
Excerpted from Plumbing (The Taunton Press, 2016) by Steve Cory.