Oleodinamica Marchesini V0454 VBLP 3/4 cross-line relief valve with pilot check valves

Oleodinamica Marchesini V0454 is the VBLP 3/4 cross-line relief valve with pilot check valves, with a factory maximum operating pressure of 350 bar and mass of 2.534 kg.

The VBLP combines a double pilot-operated check valve with two crossed pressure-relief branches. It holds the actuator in position and limits pressure applied to the actuator. The exact factory row gives maximum flow of 110 l/min and 3/4" BSP connections.

Connect V1/V2 to supply and C1/C2 to the actuator according to the original combined circuit. The standard spring range is 10–180 bar, with a catalogue standard setting of 100 bar. These are relief-setting references, separate from the 350 bar component limit and from a confirmed delivered calibration. The selected supplier article is the standard screw-adjusted execution; handknob and sealing-cap alternatives are not inferred.

The zinc-plated steel body contains hardened and ground steel parts with standard BUNA-N seals. The original factory hydraulic symbol and exact article drawing are retained in the local PDF. Where the manufacturer describes slight internal leakage, the component is not represented as a zero-leakage shut-off device.

The local technical PDF contains the complete relevant manufacturer spread, including the named article or accessory drawing. Neighbouring valve ratings and optional configurations apply only to the corresponding identified part. Any 50 °C oil temperature and 30 cSt viscosity beside curves are reference conditions.