Oleodinamica Marchesini V0050 VBPDE 3/8 double pilot-operated check valve

Oleodinamica Marchesini V0050 (VBPDE 3/8) is an in-line double pilot-operated check valve with 3/8 inch BSP connections. The manufacturer lists a maximum flow of 45 l/min and a maximum pressure rating of 350 bar. These ratings identify separate selection limits; use the original performance curves and installation details to check the operating point.

Two pilot-operated check elements hold the actuator through its two service lines. Supply flow opens the relevant check path; reverse flow requires a pilot signal. The factory pilot-ratio notation is 1:5, with a listed cracking pressure of 8 bar. Connect the directional-valve lines to V1 and V2 and the actuator lines to C1 and C2. A pilot check valve provides load holding and should not be treated as a counterbalance speed-control valve.

The body is zinc-plated steel with hardened and ground steel internal parts. The manufacturer specifies BUNA N seals. Reference curve conditions are 50 °C oil temperature and 30 cSt oil viscosity. The local reference includes the complete relevant manufacturer spread with its code table, hydraulic schematic, dimensions, curves and conditions.

Representative manufacturer product image for the VBPDE series. Port size, dimensions and adjustment details depend on the exact article; use the original drawing and article table in the local technical PDF.