Oleodinamica Marchesini V0581/C pressure-compensated flow control valve

Oleodinamica Marchesini V0581/C, designated VRFU90°/C, is a pressure-compensated unidirectional flow-control valve with 1/4 inch BSP connections. Its internal compensation system is intended to keep actuator speed stable as the load changes, while the check-valve path allows flow in the opposite direction. The manufacturer lists a 250 bar maximum component pressure for this exact code.

This /C execution is distinct from the unsuffixed non-compensated V0581. The zinc-plated steel body contains hardened and ground steel internal parts and standard BUNA-N seals. Flow adjustment uses a hand knob with a side locking screw.

The documentation contains unresolved direction information. The visible current instructions and circuit labels describe regulation from V/A to C/B, while the current website and legacy English instructions describe the opposite direction. The directional flow-table headings also differ between editions. This card therefore does not certify a regulated-flow direction or directional maximum flow. Dimensional changes between editions are likewise not presented as one verified supplied execution.

The local reference preserves the complete current manufacturer spread and the earlier manufacturer-authored sheet retained by a supplier so these differences remain visible. The manufacturer image represents the VRFU90°/C family; it is a factory illustration rather than an exact-size product photograph.