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How gas pumps know when to turn themselves off.
https://www.youtube.com/watch?v=fT2KhJ8W-Kg
Previously:
https://www.homemadetools.net/forum/...065#post214184
https://www.homemadetools.net/forum/...814#post202245
https://www.homemadetools.net/forum/...233#post203951
https://www.homemadetools.net/forum/...931#post202677
https://www.homemadetools.net/forum/...517#post173897
These do not work using a 12 volt pump...
It’s not the fact that it is 12 volts that is the problem. The design relies on the flow of fuel in the Venturi, creating the suck to make it all work. What you need is a pump of any voltage that delivers the correct flow of fuel through the Venturi. If the pump specs are correct, perhaps the amperage available from your 12 volt source is not enough to run the pump at the desired output.Quote:
Originally Posted by IntheGroove
What brand of 12 volt pump do you use that has the flow required to work the nozzle?
What IntheGroove, is referring to are the fuel transfer pumps normally mounted on bulk storage tanks either in the bed of a pickup or on a bulk farm fuel tank. Thes pumps are either on or they are off the nozzle does not shut off the pump it merely stops the flow the pump is still running at pressure, but since the valve is closed no fuel comes out. There is no need for those multi valved pressure and flow regulating handles in fact since the pumps are constant pressure constant flow unlike a station pump where the pump is a variable displacement with flow requirements that can go all the way down to near zero flow, these handles do not work very well at all.Quote:
Originally Posted by Moby Duck