Oleodinamica Marchesini V1431 VBCD SE/A NG10 CETOP 5 single counterbalance valve

Oleodinamica Marchesini V1431 is the VBCD SE/A NG10 CETOP 5 single counterbalance valve, with maximum flow of 80 l/min and the factory pilot-ratio designation 1:4.5. The factory maximum operating pressure is 350 bar.

The counterbalance element holds an overrunning actuator and meters its return flow when pilot pressure is applied. Only the specified actuator line is controlled; the other line provides the separate free-flow and pilot path shown in the original circuit.

This is a NG10 / CETOP 5 sandwich module controlling line A. The P/T passages and the unregulated actuator passage shown in the factory symbol pass through the stack. Align the original port pattern, four mounting holes and O-ring faces with the valve stack; this plate does not use BSP pipe ports at its mounting interface.

V1431 is the standard single-line A execution, separate from the closed-centre V1436. Its factory table lists mass 3.340 kg, thickness S of 69.5 mm and height H of 60 mm. The printed L/L1 dimensions need clarification against the drawing, so an overall length is not assigned in the structured specifications.

The catalogue standard setting is 320 bar, separate from the component maximum pressure and from the actual setting of a delivered unit. The manufacturer specifies a setting at least 1.3 times the load-induced pressure to allow the valve to close under maximum load. Apply that guidance to the machine circuit rather than treating it as a new order-code combination.

The zinc-plated steel body contains hardened and ground steel parts with standard BUNA-N seals. The local PDF retains the complete relevant original manufacturer spread, including the exact article table, hydraulic symbol and installation drawing. Where curves specify oil at 50 °C and 30 cSt, these are reference conditions rather than operating-temperature limits.