Oleodinamica Marchesini V0178 VBPDE 1/4 A double pilot-operated check valve

Oleodinamica Marchesini V0178 (VBPDE 1/4 A) is a double pilot-operated check valve. The factory maximum operating pressure is 350 bar and the maximum flow is 20 l/min.

Two pilot-operated checks retain the actuator in both directions. Each section permits supply flow towards its cylinder port and blocks return until the opposite pilot line is pressurised. Connect V1/V2 to the supply and C1/C2 to the actuator using the mounting arrangement for this execution.

The manufacturer table specifies a 1:5.5 pilot ratio and a catalogue cracking pressure of 4.5 bar. These are the standard table values for this code; optional springs and seal arrangements are separate configurations.

The type-A body uses 1/4" BSP threaded supply and actuator connections. Its port geometry and size-specific ratings are defined by the exact factory row and original drawing; the /FLV screw-mounted version is a separate article.

The body is zinc-plated steel with hardened and ground steel internal components and standard BUNA N seals. The local PDF preserves the complete relevant manufacturer ratings, schematic, dimensions and conditions. Representative manufacturer product image for the VBPDE A series. Use the exact article drawing in the local PDF to check its connections and mounting arrangement.