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Why is my water tank not filling up?
The cold water tank in the loft seems to be running low and isn't refilling properly. We can hear it trying to fill but it's very slow?
Expert Trade Answers
"It's sounds as if the ball valve stuck
Either replace or try pulling the arm up and down carefully
Could release"
Either replace or try pulling the arm up and down carefully
Could release"
Answered on 2nd May 2026 - Member since Jan 2020 -
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"Hello. Usually the reason is in the filling mechanism. Limescale deposits and aging rubber valves are common reasons for the tank to fill slowly."
Answered on 2nd May 2026 - Member since Mar 2023 -
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"Is the ball valve moving freely? It will more than likely the ball will need a replacement."
Answered on 2nd May 2026 - Member since Nov 2023 -
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