Oleodinamica Marchesini V0642/180 VSQAPP 3/8 pressure-compensated sequence valve

Oleodinamica Marchesini V0642/180 (VSQAPP 3/8) is a pressure-compensated sequence valve. The factory lists a 350 bar working-pressure limit. Maximum flow is 35 l/min. The exact supplier-listed /180 article has a 10–180 bar adjustment range, with a factory catalogue standard setting of 90 bar. The setting range is distinct from the 350 bar body rating.

The sequence element admits flow to the second actuator when the primary circuit reaches the selected threshold. The internal check allows return flow. Primary-pressure compensation reduces the effect of downstream back pressure, distinguishing VSQAPP from the basic VS2C sequence valve. Connect V to supply and C to the cylinder and follow the original two-actuator application circuit.

The listed standard setting is a catalogue reference, not a measurement of the supplied calibration. Spring-table pressure-increase values use the factory test conditions, including the special flow condition for low settings. The local PDF preserves those conditions and all original spring and adjustment tables.

The manufacturer specifies a zinc-plated steel body with hardened and ground steel internal parts. Standard seals are BUNA N. The local technical reference contains the complete relevant factory spread, including the code table, hydraulic schematic, dimensions and applicable operating conditions. Representative manufacturer product image for the VSQAPP series. Port sizes and execution details depend on the exact article; use its factory table and original drawing in the local PDF.