The devices described herein are protected under international patent law and remedy for any infringement will be resolutely pursued by Waterlog UK, Dow Chemical Corporation, Rochem and parties having beneficial interest in the intellectual property rights of components contained in or associated with these products.
Waterlog has an ongoing aggressive research programme to bring you outstanding performance year after year.....

Waterlog engineer Dr. Rozi taking performance & purity readings at sea
The graphics on this page may take some time to load - thank you for your patience...
Below: The Waterlog pump. Beauty in simplicity: there is only one rotating part.
There are no crankshafts, oil sumps or connecting rods. Waterlog is the only watermaker in the world to have eliminated all that weight and complexity. This is truly an outstanding example of elegance and reliability in engineering design. Reliability proven by countless ocean crossings.
As the spheres ride on an spinning offset raceway, the relative distance to datum increases & decreases.
![]()

Waterlog is unique. There is nothing else like it.

Above: General arrangement of Waterlog. Patent Office extract
Note: Legal proceedings have taken place whereby another company has been obliged to pay costs, damages, recall where possible goods already shipped and destroy all relevant material in their possession.
Langauge
Français, Deutsches, Español, Italiano, Portuguese -
Translate ? 
Main Components:-
5/ Outer mirror polished stainless steel case
6/ Impellor - Removable for stowage when unit is not in use.
9/ Pressure relief valve.
10/ Stainless steel pressure containment vessel.
11/ Removable desalination element.
12/ Drinking water collection gallery.
13/ Annular filtration chamber.
14/ Bearing.
15/ Annular induction ring.
16/ Annular stainless steel filter mesh elements.
17/ Inlet ports from pre filtration stage.
18/ High pressure pump.
20/ Drinking water out/quick release towing tube coupling.
21/ Reject water discharge port back to sea.
End of listing

It costs much less, lives much longer, uses no electricity.
Waterlog - The only logical choice for a sailing yacht.
Return to Top of page

Graphic of Wankel engine courtesy of Matt Keveney
The basic principle of rotary pumping - only one moving part
Note: There are variations of these basic principles between various Waterlog models.