Have you read this thread??
nearly everything i know about this topic is located on the above thread. I don't know of a simpler more straightfoward place on the net to find info on do it yourself wvo conversions. It will take a long time to read because it is several pages long. Most of your questions should be answered there i would immagine. I posted several photo's and diagrams there.
below is a very simple diagram of the dual fuel veggie system (missing from the diagram is the coolant lines to heat the tank and the fuel line)
here is a photo of the filter housing i use to filter wvo before it goes into the tank.
below is the 110 volt pump i use to move the oil from the grease dumpster at the restaurant through the filter and into my tank.
I do not have handy a photo of the submersable sump pump that i set inside the grease dumpster. This is a low pressure high volume self priming pump that simply feeds oil to the more powerful not self priming pump which is pictured above. I try to leave the suction end of the pump a few inches from the top to reduce the amount of "dirty" oil that gets sucked up. This pump has a screen to keep out any big stuff like french fries.
I'll be more than happy to try to answer any questions you may have that don't get answered in the previously posted wvo thread.
We need more wvo people on the roads! it's quite simple...it's not rocket science.