Oleodinamica Marchesini CP01643M is a supplier-listed adapter associated with the VDFS row-marker valve family. The manufacturer lists this exact accessory code in the VDFS page Related field alongside the V1450 host valve. An independent supplier lists CP01643M as an adapter with a 1/4 inch–3/4 inch 16UNF designation; this wording is retained as a supplier statement.
The original VDFS sheet describes an optional G 1/4 female reducer and shows its outline installed at the top of the host valve side-view. The illustration does not label that reducer CP01643M and does not provide a standalone accessory drawing. It supports an optional-adapter application reference rather than an exact part-geometry certificate.
No working-pressure rating, flow rating, body material, seal material, mass, dimensions, tightening torque or verified threaded-end mapping is assigned to this adapter. The V1450 host specifications and circuit do not establish these accessory characteristics.
The local PDF preserves the complete original manufacturer host-family spread with an applicability note. The accompanying reference illustration shows the optional reducer in installation context, including its original callout; it is not a product photograph or an exact code-labelled CP01643M part drawing.
