Oleodinamica Marchesini V0433 VBCD 3/8 DE FL CC double counterbalance valve

Oleodinamica Marchesini V0433 (VBCD 3/8 DE FL CC) is a double counterbalance valve rated for 40 l/min maximum flow and 350 bar maximum operating pressure. Its factory pilot ratio is 1:4.5. The manufacturer lists a standard setting of 320 bar; this catalogue setting is separate from the maximum pressure rating.

The two counterbalance sections control load-driven actuator movement and retain the load in both directions. Pilot pressure opens the appropriate controlled return path, while the integrated check paths permit supply flow. Connect V1/V2 to the supply and C1/C2 to the actuator as shown in the original hydraulic schematic.

The CC execution is specified for closed-centre circuits. The manufacturer describes it as insensitive to return back pressure and suitable for applications where a standard overcentre valve does not control the load correctly. This identifies the counterbalance design compatibility, rather than a centre position of a directional spool inside this valve.

Supply connections V1/V2 are 3/8" BSP; both actuator-side C1/C2 passages are flanged 9 mm bores with O-ring sealing. Mount them to the matching actuator interface. The separately illustrated mounting base is not implied to be included.

The manufacturer specifies a valve setting at least 1.3 times the load-induced pressure. Check the circuit setting against the actual load; no customer-specific adjustment or /P or /PP option is inferred from this standard article code. The body is zinc-plated steel with hardened and ground steel internals and standard BUNA N seals.

The local PDF preserves the complete relevant manufacturer code table, hydraulic schematic, original drawings, curves and conditions. Representative manufacturer product image for the VBCD DE FL CC series. Check the exact article drawing and hydraulic schematic in the local PDF for its port arrangement and execution.