Oleodinamica Marchesini V0738 VMPDI 1/2 cross-line relief valve

Oleodinamica Marchesini V0738 (VMPDI 1/2) is a cross-line relief valve with a factory maximum pressure of 350 bar and listed mass of 1.490 kg. The original sheet identifies this exact article; the manufacturer photograph represents the series.

The factory maximum flow is 70 l/min and the connection size is G 1/2. Actual relief setting and spring range are distinct from the maximum pressure rating. The observed supplier offer specifies a 10–180 bar range for the in-line valves; no unobserved adjustment or pressure-setting suffix is generated.

The two crossed relief branches limit pressure in both actuator or motor lines. Six connection ports, described as two inlets and four reversible outlets, allow the circuit to serve two cylinders. The repeated V1/V2 labels identify the crossed passages; connect supply and actuator sides according to the original schematic. The manufacturer recommends mounting near the actuator.

The zinc-plated steel body uses hardened and ground internal parts and standard BUNA-N seals. Follow the original circuit and installation drawing in the local PDF. Where pressure/flow curves use oil at 50 °C and 30 cSt, these are curve reference conditions and not an operating-temperature specification. The complete relevant factory spread is retained unchanged.