Oleodinamica Marchesini V0720/180 VMP 3/4 direct-acting pressure relief valve

Oleodinamica Marchesini V0720/180 (VMP 3/4) is an in-line direct-acting pressure relief valve with 3/4 inch BSP connections. The manufacturer lists a maximum flow of 90 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.

This is the fully specified /180 article observed in a supplier offer, with the manufacturer standard 10-180 bar adjustment range. The local datasheet identifies the base body code and the corresponding spring range. The catalogue default setting for that spring is 90 bar; it is distinct from the 350 bar body rating and does not replace checking the actual supplied calibration. Connect the pressurised line to P and the tank line to T; the P connection is reversible as shown in the original drawing.

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 VMP series. Port size, dimensions and adjustment details depend on the exact article; use the original drawing and article table in the local technical PDF.