Modular Load-Sensing Spool Valves for Compact Hydraulic Systems Architecture

Danfoss Power Solutions introduces a pre-compensated hydraulic platform designed to provide scalable flow control for space-constrained mobile machinery and agricultural attachments.  www.danfoss.com Danfoss Power Solutions is releasing the CVG 8, a pre-compensated load-sensing spool valve engineered for low-flow mobile machinery, automated guided vehicles, and agricultural implements. This compact hydraulic solution addresses the engineering challenge of integrating modular flow control within space-constrained industrial automation and mobile equipment ecosystems. System Modularity and Design Architecture The CVG 8 platform utilizes a modular configuration, allowing engineers to specify inlet modules, basic sections, end plates, and actuators according to precise application requirements. This architectural approach permits integration with existing hydraulic integrated circuits (HIC) and larger proportional valve sections, ensuring that fluid flow and system pressure can be tailored for each specific machine function. By standardizing the interface plates and spool configurations, the system reduces the need to adapt machinery to fixed valve designs, thereby simplifying the overarching hydraulic systems architecture. Physical Footprint and Technical Specifications For applications where installation space is severely restricted, reducing the physical dimensions of hydraulic components is a critical engineering requirement. The basic module of the CVG 8 valve is 30 percent smaller than previous iterations, such as the PVB16 module, optimizing machine layout flexibility. Furthermore, the integration of compact load-sense relief valves contributes to a 12 percent weight reduction in a standard three-section configuration compared to legacy systems. The valve supports a maximum work port flow of 40 liters per minute and operates at a maximum pressure of 350 bar. Control Mechanisms and Application Ecosystem The platform provides open-loop spool position control utilizing analog current mechanisms, with Controller Area Network (CAN) bus integration available via the CAN 2 Current (C2C) microcontroller. Supporting up to eight discrete work sections per valve assembly, the system accommodates manual override protocols for operational redundancy. This combination of digital control compatibility and physical scalability makes the technology suitable for aerial work platforms, small cranes, reach mowers, and agricultural attachments such as balers, sprayers, and harvesters. According to Jonas Lauersen, Global Product Portfolio Manager at Danfoss Power Solutions, the load-sensing architecture is engineered for full compatibility with existing proportional valve systems, establishing a control platform capable of scaling as machine hydraulic requirements evolve. Additional Context This section details technical specifications and competitive benchmarking not included in the original news release. In the sub-50 liters per minute load-sensing directional valve market, this platform operates in the same technical category as architectures such as the Bosch Rexroth EDG and the HAWE Hydraulik PSL series. While the HAWE PSL frequently utilizes a seated valve design optimized for zero-leakage, high-pressure holding applications, the Danfoss spool architecture prioritizes precise proportional flow control and hysteresis reduction for dynamic mobile equipment. Compared to the Bosch Rexroth EDG, which also targets compact mobile machinery, the CVG 8 emphasizes mechanical cross-compatibility with heavier-duty proportional valve sections. This allows hydraulic engineers to mix low-flow and high-flow work sections on a single manifold assembly without requiring secondary pressure-reducing blocks, simplifying hydraulic routing in complex implement setups. Edited by Aishwarya Mambet, Induportals Editor, with AI assistance. www.danfoss.com Powered by Induportals Media Publishing