Oleodinamica Marchesini V0736/400 VAUAC 1 differential-area relief valve with anti-cavitation

Oleodinamica Marchesini V0736/400 is the VAUAC 1 differential-area relief valve with anti-cavitation with the actual supplier-selected 50–400 bar spring range and 1" BSP connections. The manufacturer prints the base row and finite spring table; the full calibrated code is selected on the supplier offer rather than generated. Its base component row specifies maximum flow 160 l/min and maximum operating pressure 350 bar.

The assembly combines one differential-area relief element with a make-up check. It limits pressure in one actuator branch, with a slower opening characteristic and more consistent setting as flow changes. Connect V1 and V2 according to the original hydraulic symbol.

The 50–400 bar range describes spring adjustment capability rather than a confirmed delivered preset. The catalogue standard-setting reference for this spring is 180 bar. The spring endpoint does not override the separately stated 350 bar component limit.

The body is zinc-plated steel with hardened and ground internals, standard BUNA-N seals and guided-poppet sealing with negligible leakage. The common size row gives a mass reference of 3.155 kg; no separately weighed calibrated spring execution is stated. Handknob and sealing-cap suffixes denote other adjustments and are not added to this screw-adjusted article.

The local technical PDF retains the complete relevant original manufacturer spread, including the applicable size row, spring or option legend, hydraulic diagram and drawing. Neighbouring executions apply only to their identified rows. Any 50 °C oil temperature and 30 cSt viscosity beside curves are test conditions, not operating limits.