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Re: LPG Question


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Posted by NDS on January 05, 2005 at 05:37:05 from (205.188.117.13):

In Reply to: Re: LPG Question posted by w6tractor on January 04, 2005 at 19:14:13:

David is right on the vapor return line. Most farmers did not have pump but bled large amount of vapor out this fitting to lower pressure in tractor tank so higher pressure in storage tank would push fuel into tractor. Contrary to what most people think this was not like lowering air pressure but depended on large amount of vapor bl
ed to lower temperature of liqid LPG in tank causing pressure to fall. Sometimes tank would actually frost over. Vapor pressure of LPG varies greatly depending on temperature. Pressure will drop more than 50% with temperature drop from 100 to 32.

LPG is actually a liquid fuel when under pressure.


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