Desperate for the Bog!!!

I don't know exactly what toilet you have but this is a TMC one (if the link works)
manual%20toilet.jpg

In common with a number of popular toilets it has a pump which simultaneously pumps flushing water in and waste out.

The Lavac operates on a completely different principle. The toilet is sealed when closed, the pump, basically a Whale/ Henderson bilge pump,
mk5_sanitation_pump.jpg
pumps the waste out creating a partial vacuum in the toilet which draws the flushing water in via a vented loop.

If you can fit a Lavac (read the details on the website ). You will not regret doing so. It must be installed correctly though.
 
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