On Thu, 17 Jan 2008 13:03:39 +0100, David in Normandy wrote:

RobertL says...
On Jan 16, 9:46Â*pm, Skipweasel wrote:
In article ,
says...

Ideally if the butt runs dry then the supply needs to switch back
to mains water (either manually or automatically).

I thought about doing that, but it was ridiculously hard to comply
with the water regulations. If it were as simple as a double
non-return valve I'd have done it, too.


Does it need to comply with the water regs if it is not directly
connected to the water supply? I mean, does connection to the sewer
mean it has to comply?

Suppose you fed the loos ONLY from the water butt and also had a ball
valve in the water butt so if it got very low it was filled form the
mains.

Robert


I guess that would be perfectly legal. May be worth considering.

Especially if the ball valve was fed via a n/r valve or 2. With the ball
valve near the bottom of the butt it would make a very nice automatic
changeover system.

--
Mick (Working in a M$-free zone!)
Web: http://www.nascom.info http://mixpix.batcave.net