LC40A20D7X/-004

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The Bosch Rexroth LC40A20D7X/-004 (R900928984) is a sophisticated 4-way cartridge valve designed for integration into compact block systems. This valve is engineered to facilitate various hydraulic functions including pressure, directional, and throttle control by being paired with corresponding pilot control valves. It offers a modular approach that allows for the customization of flow rates to match the specific requirements of each actuator pathway, providing a cost-effective solution for multi-functional applications. Constructed with a standardized power section that fits into the control block, it comes with a cover that connects the control side to the pilot valves. The LC40A20D7X/-004's versatility is further enhanced by its control cover which houses control bores and may include additional features like stroke limitation, hydraulically controlled directional seat valves, or shuttle valves depending on the desired function. Furthermore, it can accommodate electrically operated directional spool or seat valves. The operation of this 4-way cartridge valve is pressure-dependent, creating three essential pressurized areas—A1, A2, and A3—that determine its functionality. The ratio of these areas varies between models to provide different annulus areas and cracking pressures. Areas A1 and A2 are active in the opening direction while area A3 along with a closing spring work in the closing direction. The unique design allows for fluid flow from port A to B or vice versa with reliable blocking when pressurization occurs at area A3 due to pilot oil discharge from channel B or an external supply. The valve poppet can be specified with or without a damping nose based on operational requirements and desired response characteristics. In summary, the Bosch Rexroth LC40A20D7X/-004 (R900928984) way cartridge valve stands out for its adaptability and precision in controlling hydraulic flows within compact system designs. Its construction allows for tailored hydraulic system performance while maintaining efficiency and reliability across various applications.