pressurized diesel fuel tank

To have combustion you need three things:
Fuel - Air - Ignition

In your project you have 2 of the three items for combustion, fuel and air, enclosed in a tank thus now you have a kaboom. The kaboom comes after the bomb.

Yes, a diaphram pump would be alot better idea as pointed out by sNd. A Surflo 12vdc 5gpm pump that will pump 80psi, diesel rated.

T_Bone

As Paul pointed out, you first need high pressure to over come the static pressure of 43.29psi, then add more pressure to over come friction of the wall resistance or Cv factor, then I don't know if you'll have a pumping loss because of the diesel? I've never tried to pump #2 that high so I'd have to read up on it.

Overall I'd say you would need a 80psi pump just to cover all your bases on a 1/2" line with check valves at every 20ft joint.

Do be very caucious if you get up in the 300psi range (could be as little as 200psi during the heat of the summer) as then your close to the latent heat of compression of #2, or the reason why a diesel engine fires.

Are you in a cold climnate? Maybe your close to the #2 gell point, 0ºf.

As you can see there's many considerations to this design and is why you need a engineer to solve the problems.

T_Bone

Soundguy

--->Paul