Jet Fuel and Polyethylene

[vanblar]

I'm looking for a sump tank able to withstand jet fuel and slight pressure (1-2psi) with a capacity of 1/2 to 1 gallons for a small unmanned air vehicle. Any suggestions where to find something like that? A lot model airplane, lawn mower, go kart tanks are made of polyethylene. What is it about jet fuel (JP3, JP4, JP5, JP8) compared to kerosene, diesel, gasoline that eats away polyethylene? Metal tanks are an option. Any direction someone is willing to give is appreciated.

-Rich

 

[welshbloke]

I'm not 100% about this but I suspect that the crucial difference with jet fuel is the additives that are commonly used to combat fungal and static problems.
The first problem stems from microbes (cladesporum resinae) growing inside fuel tanks. These produce acids that can attack light alloy structures so are combatted with EGME (ethylene glycol mon-methyl ether).
The second additive is used to incraese the fuels conductivity and therefore make it safer in the event of a lightning strike - a common one is Shell ASA.3.
Hope this helps...

 

[jdsewell]

welshbloke,
cool info. i wasn't aware of the anti-fungal additives.