Oleodinamica Marchesini VX631 VU 1 1/4 INOX stainless-steel in-line check valve

Oleodinamica Marchesini VX631 is the VU 1 1/4 INOX stainless-steel in-line check valve with 1 1/4" BSP female connections. The exact selected named-brand supplier offer uses this full VX code. The manufacturer documents VX in place of V0 for the stainless body option; its corresponding printed standard size row is V0631. No ordering-code combination is generated.

Connect V to supply and C to the downstream circuit. The guided poppet permits forward flow from V to C and blocks reverse flow from C to V.

The standard steel V0631 row lists maximum flow 250 l/min, maximum pressure 300 bar and cracking-pressure reference 0.7 / 1 bar. These are explicitly labelled base-execution references, rather than separate stainless execution ratings. No unqualified pressure, flow, mass or exact cracking-pressure filter is assigned to this VX profile.

The stainless grade and exact seal compound are not stated for this supplier-selected material execution. The original common-family drawing is provided for reference. Confirm exact stainless limits and the delivered spring for the intended application; the slash-separated opening reference does not establish one exact calibrated spring.

The local technical PDF retains the complete relevant original manufacturer spread, including the applicable size row, spring or option legend, hydraulic diagram and drawing. Neighbouring executions apply only to their identified rows. Any 50 °C oil temperature and 30 cSt viscosity beside curves are test conditions, not operating limits.