Oleodinamica Marchesini V0518 VABP FL 6 flange-mounted two-pump hi-low unloading valve

Oleodinamica Marchesini V0518 (VABP FL 6) is a flange-mounted two-pump hi-low unloading valve for a circuit with two parallel pumps. Maximum listed flows are 20 l/min at AP, 40 l/min at BP and 60 l/min at T. The AP/high-pressure side is rated up to 350 bar, while the BP/low-pressure stage is limited to 100 bar.

When the unloading pressure setting is reached, the larger-displacement high-flow pump is routed to tank. The smaller high-pressure pump continues supplying the actuator. Port-specific flow and pressure limits must be observed independently.

Mount the NG6 execution on the power unit and flange the compatible directional valve onto it. Connect BP (3/8 inch BSP) to the high-flow pump, AP (1/4 inch BSP) to the smaller pump, T to tank and A/B to the actuator. A, B and T are 1/2" BSP. The factory spring ranges are 20–80 bar for BP and 50–350 bar for AP; these ranges do not specify the delivered adjustment setting.

The burnished steel body contains hardened and ground steel internal components. Seals are standard BUNA N. The local PDF retains the complete relevant original ratings, circuit, drawings and conditions. Representative manufacturer product image for the VABP FL series. Refer to the exact article drawing in the local PDF for its port geometry and mounting interface.