Oleodinamica Marchesini VC1200/V400 differential-area cartridge relief valve

Oleodinamica Marchesini VC1200/V400 is the VMPC 120 differential-area cartridge relief valve, offered as this exact article by an independent hydraulic supplier. The selected pressure adjustment range is 50-400 bar and the adjustment is by handknob. The full supplier code is retained; it was not generated from an ordering matrix.

The manufacturer identifies this series as VMPC 120 and titles the sheet 120 l/min, while both visible article rows in its maximum-flow table state 160 l/min. These source values disagree. Neither is assigned as an unqualified maximum-flow filter for this article; confirm the required duty with the manufacturer before selecting on flow.

The original rows explicitly identify VC1200/200 as 20-200 bar and VC1200/400 as 50-400 bar. The same sheet prints handknob and sealing-cap-preparation options. The cavity thread is M32 x 1.5, not a BSP pipe port. Fit the cartridge into the matching original cavity, following the P and T passages, shoulder and sealing dimensions.

The sheet gives pressure adjustment ranges but no separate maximum body working-pressure rating. The spring endpoint is therefore not copied into a maximum-operating-pressure attribute. No delivered preset or option-dependent envelope is inferred.

The family specification uses a zinc-plated steel body, hardened and ground steel internal parts, BUNA-N seals and a guided poppet with negligible leakage. Mass is retained only as a labelled base-execution reference; exact handknob or cap-option mass is not independently specified. Oil temperature 50 C and viscosity 30 cSt beside the curves are reference test conditions, not operating limits.

The genuine manufacturer family photograph may depict a different adjustment. The local technical PDF retains the full relevant original spread, including the exact size or pressure-range row, adjustment legend, hydraulic circuit, curves and installation drawing. Adjacent executions apply only to their named rows.