Slow filling toilet cistern

[Jim]

I have a side entry ball cock and valve in an upstairs loo. The water is supplied from the cold water tank in loft. It is very slow filling. Is there a better type of valve that might increase the rate of fill please? The present valve is a conventional copper one.
Jim

 

[chrishutt]

Check the orifice in the float valve (ball cock in old english). This will probably be white plastic, which is for high pressure water supply. Change this for a red, low pressure one and your cistern will fill much more quickly.

 

[andybarlow1]

How big is the gun on the tank in your loft????

 

[ChrisR]

Surprisingly often the whole little funnel thing is full of scale.

 

[Jim]

Thanks for advice.
The present ball cock valve was a high pressure one and was restricting the flow. Solved for a couple of quid. Thanks
Jim

 

[ChrisR]

Oh no we didn't tell him to just drill it out