Oleodinamica Marchesini GN0990 GG 90° 1/4 NPT 90-degree rotating coupling

Oleodinamica Marchesini GN0990 is a 90-degree rotating coupling in the GG 90° series, with 1/4" NPT connections. The exact article is explicitly offered by an independent supplier and the manufacturer original defines the GN prefix as the NPT-thread execution.

Installed between a flexible hose and a fixed component, it compensates hose rotation and torsion to reduce hose damage. It is not suitable for fast or continuous rotation. The body is zinc-plated steel with low-friction seals.

The exact NPT supplier card specifies maximum flow 25 l/min, maximum pressure during rotation 200 bar and a separate maximum pressure 400 bar. Apply the lower pressure limit during rotation.

The local PDF retains the complete original manufacturer spread, including the GN NPT option, hydraulic diagram and base-size tables. Representative manufacturer series product image; visible connection threads may show the standard BSP version.