Oleodinamica Marchesini V0401 VBCD 3/8 SE FCB4 single counterbalance valve

Oleodinamica Marchesini V0401 is the VBCD 3/8 SE FCB4 single counterbalance valve, with a factory maximum operating pressure of 350 bar and mass of 1.080 kg.

The factory maximum flow is 40 l/min and the pilot-ratio designation is 1:4.5. The counterbalance element holds an overrunning load and meters its return flow when pilot pressure is applied.

V0401 is the distinct VBCD 3/8 SE FCB4 execution. Connect V1/V2 to supply, C1 to the free-flow side and flange C2 to the actuator side requiring load control. The original sheet identifies V1/V2 as reversible. The supply/C1 threaded connections are 3/8" BSP, while the C2 flange bore is 9 mm.

The FCB4 row has body length L of 90 mm, catalogue dimension L1 of 139 mm, 28 mm mounting-pattern spacing and 6.25 mm mounting holes. Do not substitute the 30 mm pattern and 8.5 mm holes of V0400/V0402; the complete exact drawing is retained locally.

The catalogue standard setting is 320 bar, separate from component maximum pressure and the actual setting of a delivered unit. The manufacturer specifies a setting at least 1.3 times load-induced pressure to permit closure at maximum load. This guidance does not generate a new order-code configuration.

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.