Oleodinamica Marchesini V0691/V180 in-line pressure relief valve

Oleodinamica Marchesini V0691/V180 is the VMP-L-D5 3/8 in-line pressure relief valve. Its original size row gives maximum flow 45 l/min and component pressure limit 350 bar. The supplier catalogue row identifies the adjustment execution but does not print the selected spring range. Its digits are retained as part of the offered article code, without inferring a numeric range or delivered preset. The adjustment is by handknob.

Connect P to the pressure line and T to tank. The manufacturer describes the P connection as reversible. The relief element opens at the adjusted setting to limit circuit pressure; this is a relief valve, not a pressure-reducing regulator.

The original /000 notation is explicitly a placeholder requesting selection of a spring range. The offered full article shown here was observed in the supplier catalogue; it was not generated by expanding that placeholder. Flow and body-pressure values were read from the visible original size table, because its PDF text layer omits some numeric cells.

The zinc-plated steel body, hardened and ground steel internals and standard BUNA-N seals follow the original family specification. Mass is a labelled reference for the base execution, not an independently weighed handknob or sealing-cap option. No delivered preset is inferred from a catalogue standard setting. The representative manufacturer family photograph may show a screw instead of the selected adjustment; the exact article and printed adjustment legend govern the execution.

The local PDF retains the complete relevant original spread, including the size row, option legend, circuit, curves and installation drawing. Adjacent rows apply only to their identified executions. Oil temperature 50 C and viscosity 30 cSt beside the curves are reference conditions, not operating limits.