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Or if you mean would it drain the cold water tank, then yes it would be trying to drain it down but i wouldnt worry about that.

The reason i suggested this was to see if the problem lies on the cold feed dropping down from the tank on the roof down into your flat.
 
Or if you mean would it drain the cold water tank, then yes it would be trying to drain it down but i wouldnt worry about that.

The reason i suggested this was to see if the problem lies on the cold feed dropping down from the tank on the roof down into your flat.
Ok will have to try over the weekend. Will let you know. Thanks for you advice.
 
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Whats the flow and pressure like on the cold bathroom taps aswell, they should be matching, are they?
 
Just a idea. Has the installer fitted a new gatevalve feeding your cylinder and also left your old one in.
if your old one did not close properly he might of put one in after that allowing the water to be turned off.
Gatevalves can seize up, you can turn the head and it will keep turning, maybe it has seized when nearly closed.
 
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Just a idea. Has the installer fitted a new gatevalve feeding your cylinder and also left your old one in.
if your old one did not close properly he might of put one in after that allowing the water to be turned off.
Gatevalves can seize up, you can turn the head and it will keep turning, maybe it has seized when nearly closed.
The one nearest the top of the tank to the left in the pic. is rather loose and there is one above. Will have to get these checked I think.
 
The new one should be fine its the old one that the problem will be with that's why it's been left in.
 
Hi Folks,

Hope you get to the bottom of the problem soon. The suggestions so far are good. To "snatch" it means to cut a live pipe, new valve ready in the open position, put it on the pipe, do it up if it isn't push fit and close the valve.

Has to be done on rare occasions and you get soaked, absolute last resort stuff and not good inside flats or houses!
 
Looks like they have just fitted a new boiler... So they would not have touched the cold water system or your hot water tank so not there fault the shower stopped??

The pipework looks very old, possibly a blockage somewhere, needs investigating but I can't see the link to the new boiler causing it!
 

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