Oleodinamica Marchesini V0470/400 differential-area cross-line relief valve

Oleodinamica Marchesini V0470/400 is a VAU 1 in-line differential-area cross-line relief valve with 1-inch BSP connections and screw adjustment. Two cross-connected relief elements limit pressure in the two branches of a hydraulic motor or actuator. The factory size row lists maximum flow 160 l/min.

Connect the paired V1 and V2 ports between the pressure lines and the actuator or motor. The manufacturer recommends mounting close to the actuator to reduce line losses. Differential-area opening responds more slowly than the standard design but maintains a more consistent setting as flow changes.

This exact supplier article is listed with a 50-400 bar spring range. The legacy manufacturer sheet linked by the supplier prints 50-400 bar in its spring table; the current manufacturer sheet instead prints 50-350 bar standard and a component pressure limit of 350 bar. These editions are retained as separate references. The selected spring range is therefore not stated as a confirmed numerical attribute or filter. The 400 code suffix does not establish an operating-pressure rating or delivered preset. Confirm the supplied spring execution for the application and observe the component limit.

Body material is zinc-plated steel, with hardened and ground steel internals and standard BUNA-N seals. The editions also differ in envelope length and mass; neither dimension nor mass is assigned to this exact article. The image is a representative manufacturer family photograph and may show another adjustment option.

The local documentation should retain the complete current original spread and the complete legacy two-page sheet, with their respective editions identified. Adjacent catalogue rows and optional adjustments apply only to their named executions.