Oleodinamica Marchesini VX590 VU 1/4 INOX stainless-steel in-line check valve

Oleodinamica Marchesini VX590 is the VU 1/4 INOX stainless-steel in-line check valve with 1/4" BSP female connections. The factory sheet explicitly prints VX590 as its stainless example, and the selected named-brand supplier offer uses this same complete code. It is a real offered article, not an expanded ordering-code combination.

Connect V to supply and C to the downstream circuit. Flow is free from V to C when the forward pressure differential opens the guided poppet; reverse flow from C to V is blocked.

The shared sheet lists the standard V0590 steel size row at 20 l/min maximum flow, 350 bar maximum pressure and opening reference 0.4 / 0.7 bar. The supplier repeats the opening reference, but the factory supplies no separate VX590 rating or calibrated spring row. These values remain explicitly labelled base-execution references; no unqualified pressure, flow, mass or exact cracking-pressure facet is assigned to this stainless profile.

The factory identifies a stainless body without specifying a steel grade or a stainless-specific seal compound. The original common-family drawing is retained for reference; exact stainless execution ratings and installation dimensions require confirmation for the intended application.

The local technical PDF includes the complete relevant original manufacturer spread with the applicable article row, spring matrix or stainless example, hydraulic diagram and installation drawing. Neighbouring rows apply only to their stated executions. Oil temperature 50 °C and viscosity 30 cSt beside the curves are test conditions, not operating temperature limits.