A fill valve may need to be flushed out for the following reasons:
- The water is not refilling in the toilet tank.
- The fill valve stops too soon during the refill cycle.
- There might be a blockage in the rim feed hose.
- There is excessive noise or hissing during the refill process.
Click on the article below for the type of toilet you have:
- How to flush out a fill valve for a one-piece toilet.
- How to flush out a fill valve for a two-piece toilet.