How to Replace a toilet ballcock with a fill valve

Most older toilets have older-style fish and ballcock for toilets. But they are prone to fault, like running and constant water. Replacing them with a newer-style fill valve will save water and frustration now and later on. Watch this plumbing video tutorial to learn how to replace a toilet ballcock with a fill valve. It's a little more efficient and it's pretty straightforward, so see how to replace your valve!