Oleodinamica Marchesini V0643/140 compact in-line sequence valve

Oleodinamica Marchesini V0643/140 is the VSQL 1/2 compact in-line sequence valve with the actual supplier-selected 30-140 bar range. That range is explicitly printed in the visible current manufacturer pressure-range list. The size row gives 80 l/min maximum flow and 350 bar maximum component pressure, separate from the adjustable sequencing range.

Connect V to supply and C to the cylinder. The valve supplies the secondary circuit after the primary circuit reaches the selected sequencing threshold; reverse flow is free through the integral check. Secondary-circuit pressure adds to the sequencing pressure, so this is not the primary-pressure-compensated VSQAPP circuit.

The linked PDF carries an older hidden text-layer range list as well as the current visible range list. This profile follows the visible current V0646 30-120, V0643 30-140 and V0645 50-140 or 80-250 bar entries, which match the exact supplier articles. The different old 20-120 or 20-230/230-350 text is not substituted for these executions.

The body is zinc-plated steel with hardened and ground internals, BUNA-N seals and guided-poppet construction. Any mass is labelled as a base-row reference, not an independently weighed calibrated execution. No delivered preset or exact option-dependent envelope is inferred.

The local technical PDF retains the complete relevant original manufacturer spread, including the exact size or kit row, option legend, hydraulic circuit and installation drawing. Adjacent executions apply only to their named rows.