Attic Water Tank

[geoffm]

The ball cock in my attic water tank is allowing the refill tap to constantly run and therefore my outside overflow pipe is always dripping. This causes slight flooding in my back garden.

Any ideas how I might approach this problem?

[tjowen01]

[QUOTE=geoffm]The ball cock in my attic water tank is allowing the refill tap to constantly run and therefore my outside overflow pipe is always dripping. This causes slight flooding in my back garden.

Any ideas how I might approach this problem?[/QUOTE]
need to explain better dont really no what your talking about thanks terry master plumber