Monoblock vs sectional hydraulic valves: what Is the difference?

 The core difference is construction: a monoblock valve is machined from a single solid block of metal with all control sections built in, while a sectional valve is assembled from individual, stackable sections bolted together with tie rods. Monoblock valves cost less and leak less at moderate spool counts, while sectional valves offer modularity, easier repair, and flexibility to add or remove functions. 

Read more: https://whyps.com/monoblock-vs-sectional-hydraulic-valves-what-is-the-difference