Oleodinamica Marchesini V0444/PP180 cross-line relief valve with pilot check valves

Oleodinamica Marchesini V0444/PP180 is a cross-line relief valve with pilot check valves with 3/8" BSP connections. The applicable original V0444 circuit row gives 35 l/min maximum flow and a 350 bar component limit. The supplier row specifies the execution but does not print the selected spring range. No numeric range or delivered preset is inferred from the digits in its offered code. The adjustment is prepared for a sealing cap.

The VBAU combines double pilot-operated checks with dual crossed relief valves. It can hold the actuator and limit inlet pressure. Connect V1/V2 to supply and C1/C2 to the actuator according to the original symbol. No pilot ratio, check cracking pressure or leakage certification is inferred where the exact original sheet does not state it.

The original specification uses a zinc-plated steel body, hardened and ground steel internals and standard BUNA-N seals. Mass is a labelled reference for the matching original circuit row, not an independently weighed handknob or sealing-cap option. No delivered preset is inferred from catalogue standard settings. The genuine representative family photograph may show the standard DE or screw-adjusted body; the actual SE/DE/SF circuit and selected adjustment follow the named article and original diagrams.

The local PDF retains the complete relevant original spread, with its exact circuit row, spring/adjustment legend, hydraulic symbol and mounting drawing. Adjacent executions apply only to their named rows. Oil temperature 50 C and viscosity 30 cSt beside curves are reference conditions, not operating limits.