Stopcock Advice

[GMH1966]

Hi Everyone - I'm after some advice. Hope someone out there can help. The stopcock in my flat is located in my kitchen. When I turn it the cold water immediately stops running from my taps but the hot water continues to flow. Is there a reason for this? Does the hot water perhaps need to drain before the flow stops? Not sure if you need this information but I have a Viessmann Vitodens 100 boiler and Kingspan 1050 x 400 water tank.

Thanks

GMH1966

 

[ShaunCorbs]

The hot is fed via either a communal cold water tank or your own tank in the loft / above the cylinder