The on/off valve in your toilet is regulated by a ball cock in your fill valve. If your toilet runs every once in a while, you could have an issue with the ball cock. A new toilet fill valve is only a few dollars and comes with a ball cock attached. This is a quick and easy replacement to get that toilet to stop running.
Toilet repair parts and other plumbing supplies can be found at www.supplyhouse.com
Toilet repair parts and other plumbing supplies can be found at www.supplyhouse.com
