Quote:
Originally Posted by nickofoxford
Yeah I though of that too, It's an older thick plastic 5 gallon tank. What I want to do is pull the fuel out of a huge diesel tank in my garage and move it to my fuel tank. Right now it has diesel but soon it will be my holding tank for biodiesel. The big tank is probably 300 gallons or so. So the little tank will be doing the traveling, the big tank is just my fuel "buffer".
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Your diagram shows a check valve on the vacuum line. Why not put that on the tank vent of your existing gravity fed system to prevent it from overflowing and dribbling diesel? Lots simpler.
Alternatively, you could get a diesel dispensing handle -- like the kind on the gas station pumps -- and connect it to your 300 gal tank. I saw something like that at my local farm & fleet store (a Costal) last time I was in there. I don't know if the ones they sold had automatic shutoff or not, but with that big of a hose, it probably wouldn't matter. They might even sell electric lift pumps for the diesel tank, but you'd have to look.
As for the vacuum idea, you'll be sucking diesel fumes through the vacuum system, which will probably degrade all the rubber parts they touch faster. Other than that, I don't think the vacuum pump is designed to do large volumes of air, so you'll probably need to seal every pinhole leak in the setup to make it work.