Try closing the main stop tap a half turn at a time until the problem is
| We have narrowed the problem down now, or so we think, having checked
| every other angle, to being a problem in the cold water supply from the
| stop valve. Tank ball valve set up no problems etc. Can you tell me if
| it is at all possible that the main stop could have failed after being
| disturbed, we say this as i now know the splurting is coming from the
| taps when we run water, aswell as when the tank is filling? The problem
| has only started since the repair to the tank, and the main stop was
| the only thing that was disturbed or turned off when the washer to the
| ball valve was fitted. We may be totally off course here you will know
| Thanks in advance.
| Rob graham wrote:
| > This sounds like one of those problems that's unique to the setup. The
| > ballvalve is beginning to shut the water off and the sudden extra
| > opens the valve against the ball arm's pressure and the ball goes down,
| > opening the valve and releasing the pressure, so the ball rises and
| > shut the water off again. It's like the striker arm in an old fashioned
| > electric bell.
| > If you change something, it may not do this any more. For example, try
| > bending the arm slightly sideways, or reverse the rubber in the valve.
| > Failing this, replace the whole ballvalve.
| > Rob Graham