Oleodinamica Marchesini V0772/F hose-burst valve assembly — 1 mm bleed hole

Oleodinamica Marchesini V0772/F is a hose-burst valve assembly with a 1/4" BSP interface and a 1 mm bleed hole in the sealing plate, explicitly stated in the selected supplier offer. The factory CODE/F legend requires the hole size to be specified; this diameter comes from the exact offered execution, not from expanding a configurator.

This is the cartridge assembled in the male/female MMF housing, not the empty MMF body. The selected offer title and exact original V0772 row identify MMF; one supplier description line says MFF and is rejected as inconsistent with those identifiers. The supplier states a 25 l/min maximum while the factory V0770 cartridge-family row gives 30 l/min. Both are labelled references; no unqualified maximum-flow filter is assigned to this assembly.

A hose-burst valve reacts when flow exceeds its adjusted reaction threshold. The bleed hole permits slow load descent even after closure; this is not a zero-leakage load-holding device. The manufacturer specifically distinguishes VUBA from a load-holding valve or a unidirectional restrictor and recommends a downstream flow-control valve. The reaction-flow setting is not established by the 1 mm hole diameter or by the maximum-flow rating.

The local PDF retains the complete relevant original pages, exact size row, hydraulic symbol and installation context. Neighbouring executions apply only to their identified rows. Oil temperature 50 °C and viscosity 30 cSt shown with curves are reference conditions, not general operating limits.