Pretty much exactly as I had previously said then Slops
Apart from your comment on typical system pressures.
Tornado's AC Booster pumps in the front and rear collectors operate at 4-5 bar. The Engine Driven Pump (FSP) raises this pressure to 14 bar. This is the dry engines system pressure, 213 psi. The reheat system obviously requires more pressure, hence the Vapour Core Pumps in the reheat fuel control unit, however, this is still nowhere near the 3000 - 3500psi you describe.
The hydraulic systems on a Tornado operate at around 3500psi, or 240 bar. The fuel system certainly does not.
I don't know if you are referring to large aircraft when you describe this type of system, but I find it hard to believe, not to mention inefficient, if there are fuel systems operating at 3000 psi.
