Replacing tap but no isolation valves in flat

[Pokerace]

I would be very grateful for any advice on the following. I recently purchased a flat that has an electric wet central heating system. I believe that the same system also heats the water supply.

My current problem is that I need to replace a tap in the kitchen but there is no isolation valve. Next to the boiler there is a valve marked "crane" (not sure if that acts as the stopcock) but the concierge of the development told me that the stopcock is in fact situated outside my flat.

I could ask for the stopcock to be turned off, but not sure if I then have to drain the entire cylinder before I can replace the tap. I am also worried about causing any damage to the heating system, although I guess that both are completely isolated from each other.

Any advice or help would be most welcome.

Thanks

 

[JohnD]

as long as you can turn the water off, just turn on the tap until it stops running. Won't be long unless you have a storage tank. No need to drain the cylinder.

You might consider fitting a stopcock on the incoming water supply pipe while you're at it, for ease next time round.

 

[75pete]

If not happy, switch off the electric heating, shut off the cold incoming water supply then open said tap and drain.
Pete

 

[Pokerace]

I had a look at the "crane" website and the valve next to the boiler appears to be a ball valve. It looks as if it sits on the incoming water pipe. Would I be correct assuming that this valve acts as the stopcock?

Many thanks

 

[JohnD]

maybe.

Try it.

Turn off the boiler, turn off the valve, turn on the tap.

 

[Pokerace]

Many thanks for your help. I wanted to let you know that this worked!
Kind regards