Iveco VECTOR Series Technical And Repair Manual page 46

18
SECTION 2 - FUEL VECTOR 8 ENGINES
Pressure relief valve 5 bar
Mounted in parallel with the pressure regulator, its function is to keep the pressure at the regulator inlet constant, which is
necessary for the system to work properly.
When the pressure at the inlet of the regulator exceeds 5 bar, the relief cylinder (8, Figure 16), will begin to open in order to
lead the additional fuel to the outlet.
Depending on the fuel flow required, with the pressure regulator partially closed, the cylinder moves into a dynamically balanced
position such as to ensure a constant pressure of 5 bar at the regulator inlet.
Figure 15
Base - April 2006 Print P2D32V001E