Oleodinamica Marchesini V0391 VBCD 3/8 SE A CC single counterbalance valve

Oleodinamica Marchesini V0391 (VBCD 3/8 SE A CC) is a single 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 valve meters the controlled return flow to restrain an overrunning load in one direction. Connect V1/V2 to the supply, C1 to the actuator free-flow side and C2 to the controlled side, using the mounting arrangement for this exact execution. The integral check path allows supply flow towards the controlled actuator port.

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.

The supply and actuator connections are 3/8" BSP. The type designation, pilot ratio and port layout identify this execution; a type-A, closed-centre, flange-mounted or different-ratio article must be selected by its own exact code.

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 SE A CC series. Check the exact article drawing and hydraulic schematic in the local PDF for its port arrangement and execution.