LC25DB50D7X/-004

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth LC25DB50D7X/-004 (R900942172) is a sophisticated cartridge valve designed to manage pressure functions within hydraulic systems. This pilot-operated valve can be either a seat or spool type and is installed into a standardized receiving hole according to DIN ISO, sealed with a control cover. It offers versatility through the combination of different control covers, enabling various pressure functions to be realized. For pressure relief, the LC25DB50D7X/-004 operates as a seat valve with no effective area at port B, allowing for pressure-compensated closure by spring force until the set pressure is reached, at which point the spool opens to limit pressure according to flow characteristics. In its role for pressure reducing functions, it works with a control cover featuring a pressure reducing pilot control valve to regulate flow from port A to B, maintaining set pressures despite potential secondary side increases. Additionally, the LC25DB50D7X/-004 facilitates pressure sequencing functions, connecting secondary systems when certain pressures are achieved. The switching pressures are adjustable via an integrated pilot control valve on the control cover. Pilot oil supply can be external or internal through designated ports X or Z, while depressurization of the pilot control spring chamber occurs through ports Y or Z. Circuit examples illustrate its application in systems requiring unloading of low-pressure circuits upon reaching set high-pressure values or for connecting secondary systems based on specified pressures. The LC25DB50D7X/-004's design ensures reliable operation and precise control in complex hydraulic circuits, enhancing system efficiency and performance.