THANKS FOR REPLY
THERE ARE NO GATE VALVES ON PIPES IN AIRING CUPBOARD. THE ONLY VALVE IS AT THE OUTLET FROM THE CWT. I WILL CLOSE THIS AND DRAIN DOWN THE HOT SUPPLY BY TURNING ON TAPS UPSTAIRS AND DOWN.
I AM ABOUT TO FIT A NEW BATH. I HAVE A CWT IN ROOFSPACE AND A HOT CYLINDER IN CUPBOARD BELOW. THERE ARE 2 SUPPLIES FROM CWT TO COLD TAPS AND HOT CYLINDER. I CAN CLOSE THESE SUPPLIES VIA VALVES, DRAIN HOT CYLINDER AND THEN FIT NEW BATH AND TAPS.
IS THERE A SPECIFIC WAY TO REFILL HOT WATER...