The combination of valves make the cranes easier to use and safer as the high precision movements reduce the risk of operator or load damage. And, shorter loading/unloading cycles can improve productivity.
Safety valve on the main cylinder (SDV Smooth Descent Valve) and rotation valve avoid uncontrolled movements in the event of hose burst. The main cylinder valve allows high precision movements and high speed when needed. The rotation valve is the result of cooperation between Bosch Oil Control and Hyva Crane R&D.
Regenerative valve (EES Extra Extension System) facilitates higher speed crane extension and retraction (but does not impact on the extension force) and can increase productivity. Standard on all articulated crane models.