Liquid = Fuel Oil and various grades of oil (SAE-10, SAE 40 ,Diesel Fuel....)
Tank Size = 250 gal Avg Specific gravity = 0.9
Discharge size 2"
Tank is a 3'x3'x4' square tank
Controlled Flow is .004 through 150 gal per minute.
Opertating Temp 60-150 F
Flow will need to be precisely controlled for use on a viscosity calibration manifold.
The system will also need to be recirculated
I'm not sure of the pressure required nor do I think it matters.
What type of pump and control is available to complete this task