I am using a dieselcraft centrifuge, Oil centrifuges for engine oil and Biodiesel WVO applications , it seems to work really well for filtering and de-watering wvo.It is very important to make sure you have a pump that will pressure up the centrifuge to 90 psi, as i found out hard way, after buying a pump and it only gets to 45 psi. DFA has a good pump that gets upwards of 90 psi Dino Fuel Alternatives: Centrifuge_pump, Pumps .Also frybrid has some really good ideas for a wvo filtering kit using a centrifuge Frybrid Vegetable Oil Fuel Systems -- Filtraion and Dewatering Plans . Hope this helps