Oleodinamica Marchesini V0268 VBPSE 1/4 FL single pilot-operated check valve

Oleodinamica Marchesini V0268 (VBPSE 1/4 FL) is a single 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 and a check-valve cracking pressure of 3 bar.

The check section retains the actuator in one direction, with free supply flow and reverse flow released by hydraulic pilot pressure. Connect V1/V2 to the supply, C1 to the free-flow actuator side and C2 to the retained actuator side, following the original schematic.

V1/V2 and the free-flow C1 connection are 1/4" BSP. Controlled port C2 is a 5 mm flange passage with O-ring sealing for direct cylinder mounting, rather than a BSP threaded connection. Use the exact factory flange drawing for its mounting pattern.

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 VBPSE FL series. Use the exact article drawing in the local PDF to check its connections and mounting arrangement.