Enerpac Z-CLASS 3 Hoja De Repuestos / Hoja De Instrucciones De Servicio página 9

2.0 SECOND STAGE, HIGH PRESSURE - LOW FLOW
2nd stage = high pressure – low flow
• By-pass opens at pre-set pressure.
• Low pressure, gear pump flow, supercharges high pressure pistons. Remaining gear pump oil returns to tank via the by-pass
valve.
• Eccentric driven piston reciprocates to build high pressure.
Pressure port
Safety relief valve
Return to tank
to oil cooler
Low pressure
by-pass valve
(open)
High Pressure, Low Flow
Low Pressure, High Flow
Intake Oil
or
Intake
Figure 7
9
Outlet check
Inlet check
Circular groove in
gear pump feeds all
piston inlet checks
(up to 6 sets)
Gear pump