Overflow water tank leaking

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Hi
I have a water tank or two in the loft and one was leaking the other day, stopped by turning on the water. Today is ****ing out.
What’s the problem here??
Thanks
 
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Which tank?
Leaking from where?

At a guess... Cold water storage tank with ball valve Seized open. Fit new ball valve.
 
The large tank but the looks of it. Can it be adjusted or Better to just replace it?
 
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Hi
I have a water tank or two in the loft and one was leaking the other day, stopped by turning on the water. Today is ****ing out.
What’s the problem here??
Thanks
Do you mean the tank continued to overflow ,even after turning off the water supply to the tank ??
 
Do you mean the tank continued to overflow ,even after turning off the water supply to the tank ??
No. It’s just the overflow leaking out the back of the house. ivv v e changed the stop cock so let’s see.
thanks for prompt replies
 
No. It’s just the overflow leaking out the back of the house. ivv v e changed the stop cock so let’s see.
thanks for prompt replies
Could have disturbed something, could just be something in the orifice seating.
 
Your link states “Flomasta brass part 2 float valve”

You said:
The thing I replaced. See link. Stop cock?

And:

upload_2021-6-6_17-58-31.gif
 
Well I’m now getting vibrations when initially turning on the water. ideas?
 
post a photo looking into this overflowing tank please. other pics showing all the pipes connected to it, and the one hanging over the tank.

use a piece of string to tie up the ball float, which should prevent water entering through the valve. Run the tap that you said prevented the overflow, for a couple of minutes.

go and take another pic of the inside of the tank, showing the water level. Is there any sign of water entering it?

Wait ten minutes. Photograph the inside again. Has the water level changed?

Take another showing both the tanks, and indicating which is higher.

What colour is your hot-water cylinder?
 
post a photo looking into this overflowing tank please. other pics showing all the pipes connected to it, and the one hanging over the tank.

use a piece of string to tie up the ball float, which should prevent water entering through the valve. Run the tap that you said prevented the overflow, for a couple of minutes.

go and take another pic of the inside of the tank, showing the water level. Is there any sign of water entering it?

Wait ten minutes. Photograph the inside again. Has the water level changed?

Take another showing both the tanks, and indicating which is higher.

What colour is your hot-water cylinder?
Will get up in the loft tomorrow or the weekend.
Here’s the cylinder and gubbins
 

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