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Toilet fill valve
Also called: ballcock
The part that refills the toilet tank and shuts off when it is full. A constant filling sound can also come from a leaking flapper, so check which one it is first.
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When you'd need this
- I keep hearing my toilet tank filling
- The tank won't fill with water
Measure and check before you buy
- Tank height
- Water inlet position (side or bottom)
- Thread size
Safety: Caution: close the supply valve and empty the tank before you start.