Oleodinamica Marchesini V0663/180 three-port sequence valve

Oleodinamica Marchesini V0663/180 is the VS2C - 3V 1/2 three-port sequence valve. Its original size row gives maximum flow 70 l/min and component pressure limit 350 bar. The exact supplier type explicitly specifies a 10-180 bar adjustment range, matching the applicable original spring or pressure-range row. The adjustment is by screw.

This three-port VS2C - 3V execution feeds the secondary cylinder after the primary circuit reaches the adjusted sequencing pressure. Connect C to the cylinder and the two P connections to supply and the head side of the second cylinder, following the original application circuit. Reverse flow is free. The factory warns that pressures add in this uncompensated sequence arrangement; allow for secondary-circuit back pressure.

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.