DIY Doctor

Cold Water Problem

Postby andrewross » Mon Sep 21, 2009 7:11 pm

Hi, I have just changed all the taps in my bathroom, the basin ones and the two free standing taps on the bath for a mixer style with a shower head.

Before the tap replacement - I turned off the water supply (downstairs stop valve) and the tap down stairs went off, I then went into the loft and turned off three valves (two from the cold water storage tank and 1 feeding another smaller - header ? tank). Both taps downstairs now don't flow, hot in the bathroom doesn't but the cold upstairs took ages to drain the cold water tank - which drained and didn't refill.

After the tap replacement, I turned on all 4 valves. Downstairs hot and cold are running fine. Upstairs hot is running fine, cold at the start was non-existent. I left the cold water storage tank to refill, which it did, now the cold water tap runs quickly for a second, then really slowly until it almost stops. If I turn the cold water tap on, the toilet cistern stops filling, when I turn it off it starts again - very slowly. The bath mixer cold does the same, quick, slow, trickle, stop. How can I fix this and what do you think had happened?

Thank you for all your help.
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Simply Build It

Postby htg engineer » Tue Sep 22, 2009 8:30 pm

Renew the ball vave in the cold water storage tank (this probably supplies the cold water to all upstairs) it's not filling the tank quick enough.

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