Oleodinamica Marchesini V0181 VBPDE 1/4 AL double pilot-operated check valve

Oleodinamica Marchesini V0181 (VBPDE 1/4 AL) is a double pilot-operated check valve with a maximum flow rating of 20 l/min and a maximum operating pressure of 350 bar. The original factory table specifies a pilot ratio of 1:5.5 and a check-valve cracking pressure of 4 bar.

Two pilot-operated check sections retain a cylinder in both directions. Each section allows supply flow and blocks reverse flow until pilot pressure releases it. Connect V1/V2 to the supply and C1/C2 to the actuator. The V1/V2 ports are positioned on the lateral face; all main connections are 1/4" BSP.

The manufacturer specifies hardened and ground steel internal parts, standard BUNA N seals and a guided-poppet check element with negligible leakage. The original curves use oil at 50 °C and 30 cSt; these are test reference conditions, rather than an operating-temperature or viscosity range. No optional spring, seal or other configuration is generated for this article.

The local PDF retains the complete relevant factory code table, hydraulic schematic, original drawing and curves. Representative manufacturer product image for the VBPDE AL series. Use the exact article drawing in the local PDF to check its connections and mounting arrangement.