All fuel installations are built with high pressure industrial screw pump
Positive displacement running at between 6 to 8 bar this provided 100 to 125 lpm delivery rate through the light-weight slim line hoses and small spill free nozzles.
A pressure reduction valve is used to reduce pressure for manual nozzles down to 2 bar
These can be supplied single or 3 phase.
Large garages running more than one fuel island generally have double pump systems which provides redundancy.