How about an automatic bilge pump intended for a boat. They come on when
water hits the sensor and continue until free of water. They're low powered
and quiet and often deal with less than pristine water.

Try a few of the online chandlers.

Tony

"Andrew Mawson" wrote in message
...

"N. Thornton" wrote in message
m...
wrote in message
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N. Thornton wrote:
That could be the way to go, where does one get pumps, the only
ones
I've seen are Saniflow ones which are too big for what I want, I
want
a 40mm only pump.

Any DIY supplier will sell you a pump. Wickes do them for somewhere
round £30 IIRC. I wouldnt expect it to come with 40mm fittings
though.

Well I've hunted using Google etc. and have found nothing that really
seems to be aimed at waste pumping except the Saniflo ones.

Central heating pump. Designed to pump with a moderate amount of crap
in the water, which will work fine, as long as you dont feed lots of
little screws down the plughole. Youre pumping grey water, the saniflo
is for brown not grey.

Regards, NT

And running dry between baths how long will it last? Or how do you sense
to
turn it on?

Andrew Mawson