Oleodinamica Marchesini V0770 VUBA 1/4 hose burst cartridge valve

Oleodinamica Marchesini V0770 is the VUBA 1/4 hose burst cartridge, listed for a maximum flow of 30 l/min and maximum pressure of 350 bar. The visible factory drawing table gives a mass of 0.006 kg. It is a bare cartridge for installation in the correct machined port, rather than a complete inline housing.

Install V towards supply and C towards the actuator. When outflow exceeds the adjusted reaction flow, the sealing plate closes to limit uncontrolled descent following hose failure. The manufacturer states that this device is neither a load-holding check valve nor a one-way flow restrictor, and recommends a downstream flow-control valve.

The plate gap S controls the reaction flow. The manufacturer recommends setting reaction flow to approximately 1.5 times normal system flow; this is an installation setting, not a confirmed delivered preset. A separately ordered bleed-hole version needs a specified hole diameter and is not implied by this standard code. Retain the original required cavity clearance shown in the local PDF.

The local PDF retains the complete applicable original manufacturer spread, including the article table, hydraulic symbol, drawings and ordering notes. Where curves specify oil at 50 °C and 30 cSt, these are curve reference conditions rather than an operating-temperature limit.