Turning off water supply.

[Andy7]

Hi, I would appreciate some help! I am trying to isolate the (cold) water supply to an electric shower in the bathroom. I think the shower is fed from the same supply pipe as the bathroom cold water taps. I have gone into the attIc and closed the gate valve labelled “cold water feed” on the outlet from the cold water storage tank. I have the opened the bath and basin cold water taps to draw off as much cold water as possible from the pipe. But here’s the problem. The cold water keeps on flowing from the taps, whilst the level in the cold water storage tank in the attic decreases and the mains supply ball valve opens to let more water into the tank. Any suggestions? Have I missed something blindingly obvious? Thanks in advance. Andy.

 

[Ch4 plumbing]

what type of electric shower is it?

If you have turned a valve off and water still passes when you open the tap then either you have closed the wrong valve or the valve is passing water.

if the electric shower is and instantaneous heater then it will run off the cold water main but if its aa electric power shower then it will run off bot the hot and cold services fed from your CWSC.

 

[Andy7]

It is an electric shower (not power) so only has a cold water supply. I've shut off both "cold water feed" and "hot water feed" gate valves on outlets from cold water storage tank.

 

[Ch4 plumbing]

if its an electric shower then it would normally be fed via the cold main, turn this off either as it enters the house or in the street.

If your removing the case make sure that you isolate the shower electrically first!

 

[Andy7]

Thanks. Have tried the cold main stopcock. Age old problem ... turned the stopcock off as far as possible ... but passing water :-(

 

[Ch4 plumbing]

Turn the cold side of the kitchen tap on and that may allow you to work on the shower if its higher and the stopcock is only letting a little by.

 

[Dotty]

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